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Yamaguchi H, Fukumitsu N, Numajiri H, Ogino H, Okimoto T, Ogino T, Suzuki M, Murayama S. The Japanese nationwide cohort data of proton beam therapy for liver oligometastasis in breast cancer patients. J Radiat Res 2024; 65:231-237. [PMID: 38321606 PMCID: PMC10959435 DOI: 10.1093/jrr/rrad106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/17/2023] [Indexed: 02/08/2024]
Abstract
A nationwide multicenter cohort study on particle therapy was launched by the Japanese Society for Radiation Oncology in Japan in May 2016. We analyzed the outcome of proton beam therapy (PBT) for liver oligometastasis in breast cancers. Cases in which PBT was performed at all Japanese proton therapy facilities between May 2016 and February 2019 were enrolled. The patients were selected based on the following criteria: the primary cancer was controlled, liver recurrence without extrahepatic tumors and no more than three liver lesions. Fourteen females, with a median age of 57 years (range, 44-73) and 22 lesions, were included. The median lesion size, fraction (fr) size and biological effective dose were 44 (20-130) mm, 6.6 (2-8) gray (Gy) (relative biological effectiveness)/fr and 109.6 (52.7-115.2) Gy, respectively. The median follow-up period was 22.8 (4-54) months. The 1-, 2- and 3-year local control (LC) rates of liver metastasis from breast cancer were 100% for all. The 1-, 2- and 3-year overall survival rates were 85.7, 62.5 and 62.5%, respectively. The 1-, 2- and 3-year progression-free survival (PFS) rates were 50.0%, 33.3%, and 16.7%, respectively. The median PFS time was 16 months. Only one patient did not complete PBT due to current disease progression. One patient had Grade 3 radiation-induced dermatitis. None of the patients experienced radiation-induced liver failure during the acute or late phase. Owing to the low incidence of adverse events and the high LC rate, PBT appears to be a feasible option for liver oligometastasis in breast cancers.
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Affiliation(s)
- Hisashi Yamaguchi
- Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, Fukushima 960-1295, Japan
| | - Nobuyoshi Fukumitsu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, 1-6-8 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Haruko Numajiri
- Department of Radiation Oncology, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8575, Japan
| | - Hiroyuki Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, 1-1-1 Hirate-cho, Kita-ku, Nagoya 462-8508, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Takashi Ogino
- Medipolis Proton Therapy and Research Center, 4423 Higashikata, Ibusuki, Kagoshima 891-0304, Japan
| | - Motohisa Suzuki
- Department of Radiology, Southern Tohoku Proton Therapy Center, 7-172 Yatsuyamada, Koriyama, Fukushima 963-8052, Japan
| | - Shigeyuki Murayama
- Division of Proton Therapy, Radiation and Proton Therapy Center, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Suntou-gun, Shizuoka 411-8777, Japan
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Komatsu S, Terashima K, Ishihara N, Matsuo Y, Kido M, Yanagimoto H, Toyama H, Tokumaru S, Okimoto T, Fukumoto T. Novel concept of "sequential particle radiotherapy" with atezolizumab plus bevacizumab for hepatocellular carcinoma with portal vein tumor thrombus. Surg Today 2024:10.1007/s00595-024-02805-1. [PMID: 38436718 DOI: 10.1007/s00595-024-02805-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 12/13/2023] [Indexed: 03/05/2024]
Abstract
Owing to the high objective response rate of atezolizumab plus bevacizumab (Atez/Bev) for hepatocellular carcinoma (HCC), the concept of sequential conversion to local treatment has recently become mainstream. The conversion concept is mainly applied to Barcelona Clinic for Liver Cancer (BCLC) stage B cases, and radiotherapy is rarely considered as a conversion local treatment. We herein report three patients who were treated with the novel concept of "sequential particle radiotherapy," consisting of Atez/Bev therapy followed by particle radiotherapy (PRT) for HCC with advanced portal vein tumor thrombus (Vp3/4 PVTT). All patients achieved partial response radiologically and were switched to PRT. All patients were recurrence free at 1 year after the introduction of Atez/Bev therapy without any additional treatment. This upcoming combination strategy includes the advocacy of sequential concepts for BCLC stage C cases and the introduction of PRT as a local treatment after Atez/Bev.
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Affiliation(s)
- Shohei Komatsu
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan.
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Nobuaki Ishihara
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Masahiro Kido
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Hiroaki Yanagimoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Hirochika Toyama
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Takumi Fukumoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
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Mizumoto M, Ogino H, Okumura T, Terashima K, Murakami M, Ogino T, Tamamura H, Akimoto T, Waki T, Katoh N, Araya M, Onoe T, Takagi M, Iwata H, Numajiri H, Okimoto T, Uchinami Y, Maruo K, Shibuya K, Sakurai H. Proton Beam Therapy for Hepatocellular Carcinoma: Multicenter Prospective Registry Study in Japan. Int J Radiat Oncol Biol Phys 2024; 118:725-733. [PMID: 37778422 DOI: 10.1016/j.ijrobp.2023.09.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 09/13/2023] [Accepted: 09/21/2023] [Indexed: 10/03/2023]
Abstract
PURPOSE A prospective multicenter registry study was started May 2016 in Japan to evaluate the efficacy and safety of proton beam therapy (PBT) for hepatocellular carcinoma (HCC). METHODS AND MATERIALS Patients who received PBT for HCC from May 2016 to June 2018 were registered in the database of the Particle Beam Therapy Committee and Subcommittee of the Japanese Society for Radiation Oncology. Overall survival (OS), progression-free survival (PFS), and local recurrence were evaluated. RESULTS Of the 755 registered patients, 576 with initial PBT and no duplicate cancer were evaluated. At final follow-up, 322 patients were alive and 254 had died. The median follow-up period for survivors was 39 months (0-58 months). The median OS time of the 576 patients was 48.8 months (95% CI, 42.0-55.6 months) and the 1-, 2-, 3-, and 4-year OS rates were 83.8% (95% CI, 80.5%-86.6%), 68.5% (64.5%-72.2%), 58.2% (53.9%-62.2%), and 50.1% (44.9%-55.0%), respectively. Recurrence was observed in 332 patients, including local recurrence in 45 patients. The median PFS time was 14.7 months (95% CI, 12.4-17.0 months) and the 1-, 2-, 3-, and 4-year PFS rates were 55.2% (95% CI, 51.0%-59.2%), 37.5% (33.5%-41.5%), 30.2% (26.3%-34.2%), and 22.8% (18.5%-27.4%), respectively. The 1-, 2-, 3-, and 4-year OS rates were significantly higher for tumor size <5 versus 5 to 10 cm (P < .001) and <5 versus ≥10 cm (P < .001); Child-Pugh score A/B versus C (P < .001); and distance of the tumor from the gastrointestinal tract <1 versus 1 to 2 cm (P < .008) and <1 versus >2 cm (P < .001). At final follow-up, 27 patients (4.7%) had late adverse events of grade 3 or higher, with liver failure (n = 7), and dermatitis (n = 7) being most common. CONCLUSIONS This multicenter prospective data registry indicated that PBT for HCC gives good therapeutic effects (3-year local control rate of 90%) with a low risk of severe late adverse events.
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Affiliation(s)
- Masashi Mizumoto
- Department of Radiation Oncology, University of Tsukuba, Tsukuba, Ibaraki, 305-8576, Japan.
| | - Hiroyuki Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, 462-8508, Japan
| | - Toshiyuki Okumura
- Department of Radiation Oncology, University of Tsukuba, Tsukuba, Ibaraki, 305-8576, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, 679-5165, Japan
| | - Masao Murakami
- Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, Fukushima, 963-8052, Japan
| | - Takashi Ogino
- Medipolis Proton Therapy and Research Center, 4423 Higashikata, Ibusuki, Kagoshima, 891-0304, Japan
| | - Hiroyasu Tamamura
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Fukui, 910-8526, Japan
| | - Tetsuo Akimoto
- Department of Radiation Oncology, National Cancer Center Hospital East, Chiba, 277-8577, Japan
| | - Takahiro Waki
- Department of Radiology, Tsuyama Chuo Hospital, Tsuyama, Okayama, 708-0841, Japan
| | - Norio Katoh
- Department of Radiation Oncology, Hokkaido University Institute of Medicine, Hokkaido, 060-8648, Japan
| | - Masayuki Araya
- Proton Therapy Center, Aizawa Hospital, Matsumoto, Nagano, 390-8510, Japan
| | - Tsuyoshi Onoe
- Radiation and Proton Therapy Center, Shizuoka Cancer Center, Nagaizumi, Suntou-gun, Shizuoka, 411-8777, Japan
| | - Masaru Takagi
- Department of Radiation Oncology, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Hiromitsu Iwata
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, 462-8508, Japan
| | - Haruko Numajiri
- Department of Radiation Oncology, University of Tsukuba, Tsukuba, Ibaraki, 305-8576, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, 679-5165, Japan
| | - Yusuke Uchinami
- Department of Radiation Oncology, Hokkaido University Institute of Medicine, Hokkaido, 060-8648, Japan
| | - Kazushi Maruo
- Department of Biostatistics, Institute of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Kei Shibuya
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, University of Tsukuba, Tsukuba, Ibaraki, 305-8576, Japan
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Komatsu S, Wang T, Terashima K, Demizu Y, Anzai M, Suga M, Yamashita T, Suzuki O, Okimoto T, Sasaki R, Fukumoto T. Innovative Combination Treatment to Expand the Indications of Particle Therapy: Spacer Placement Surgery Using Bio-Absorbable Polyglycolic Acid Spacer. J Am Coll Surg 2024; 238:119-128. [PMID: 37737669 DOI: 10.1097/xcs.0000000000000873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
BACKGROUND Particle therapy has favorable dose distribution and high curability. However, radiotherapy for malignant tumors adjacent to the gastrointestinal tract is contraindicated owing to its low tolerance. To overcome this, combination treatment with surgery to make a space between the tumor and adjacent gastrointestinal tract followed by particle therapy has been developed. Several materials have been used for the spacer and recently, we developed the absorbable polyglycolic acid (PGA) spacer, which has been used since 2019. This study is the first report of consecutive case series of spacer placement surgery using the PGA spacer. STUDY DESIGN Fifty consecutive patients undergoing spacer placement surgery with the PGA spacer were evaluated. Postoperative laboratory data, morbidity related to the treatment, and spacer volume after treatment were evaluated. RESULTS There were no treatment-related deaths, and all but 2 patients completed combination treatment. The median ratios of postoperative PGA spacer volume to the pretreatment volume were 96.9%, 87.7%, and 74.6% at weeks 2, 4, and 8, respectively. The spacer volume was maintained at 80% at 7 weeks and was predicted to be 50% at 15 weeks and 20% in 24 weeks. CONCLUSIONS Spacer placement surgery using the PGA spacer was feasible and tolerable. The PGA spacers maintained sufficient thickness during the duration of subsequent particle therapy. Combination treatment using the PGA spacer is innovative and has the potential to become a new standard curative local treatment.
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Affiliation(s)
- Shohei Komatsu
- From the Department of Surgery, Divisions of Hepato-Biliary-Pancreatic Surgery (Komatsu, Fukumoto), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Tianyuan Wang
- Departments of Radiation Physics (Wang, Suga), Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Kazuki Terashima
- Radiology (Terashima, Demizu, Okimoto), Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Yusuke Demizu
- Radiology (Terashima, Demizu, Okimoto), Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
- Departments of Radiation Oncology (Demizu), Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Makoto Anzai
- Osaka Heavy Ion Therapy Center, Osaka, Japan (Anzai, Suzuki)
| | - Masaki Suga
- Departments of Radiation Physics (Wang, Suga), Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Tomohiro Yamashita
- Radiation Physics (Yamashita), Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Osamu Suzuki
- Osaka Heavy Ion Therapy Center, Osaka, Japan (Anzai, Suzuki)
| | - Tomoaki Okimoto
- Radiology (Terashima, Demizu, Okimoto), Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Ryohei Sasaki
- Radiation Oncology (Sasaki), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Takumi Fukumoto
- From the Department of Surgery, Divisions of Hepato-Biliary-Pancreatic Surgery (Komatsu, Fukumoto), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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Yamaguchi H, Fukumitsu N, Numajiri H, Ogino H, Katoh N, Okimoto T, Suzuki M, Sakurai H. The Japanese nationwide cohort data of proton beam therapy for liver oligometastasis in esophagogastric cancer patients. J Radiat Res 2023; 64:926-932. [PMID: 37697668 PMCID: PMC10665303 DOI: 10.1093/jrr/rrad066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/03/2023] [Indexed: 09/13/2023]
Abstract
A nationwide multicenter cohort study on particle therapy was launched by the Japanese Society for Radiation Oncology in Japan in May 2016. We analyzed the outcome of proton beam therapy (PBT) for liver oligometastasis of esophagogastric cancers. Cases in which PBT was performed at all PBT facilities in Japan between May 2016 and February 2019 were enrolled. The patients were selected based on the following criteria: controlled primary cancer, liver recurrence without extrahepatic tumors and no more than three liver lesions. Twenty-two males and two females with a median age of 69 (range, 52-80) years and 35 lesions were included. This study included 6 patients with esophageal and 18 patients with gastric cancer. The median lesion size, fraction size and biological effective dose (BED)10 were 32 (7-104) mm, 3.8 gray (relative biological effect)/fractions (Gy (RBE)/fr) (2-8 Gy (RBE)/fr) and 96.9 (88.8-115.2) Gy, respectively. The median follow-up period was 18 (4-47) months. The 1-, 2- and 3-year overall survival (OS) rates were 75, 51.8 and 45.3%, respectively, and the median OS was 25.3 months. The 1-, 2- and 3-year cumulative local recurrence (LR) rates were 3, 6 and 6%, respectively. Patients' age (P < 0.01), performance status (P = 0.017) and tumor size (P = 0.024) were significant OS-related factors. No Grade 3 or higher adverse events (AEs) were observed. Owing to the low incidence of AEs and the low LR cumulative incidence, PBT is a feasible option for liver oligometastasis of esophagogastric cancers.
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Affiliation(s)
- Hisashi Yamaguchi
- Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, Fukushima 960-1295, Japan
- Department of Radiology, Southern Tohoku Proton Therapy Center, 7-172 Yatsuyamada, Koriyama, Fukushima 963-8052, Japan
| | - Nobuyoshi Fukumitsu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, 1-6-8 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Haruko Numajiri
- Department of Radiation Oncology, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8575, Japan
| | - Hiroyuki Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, 1-1-1 Hirate-cho, Kita-ku, Nagoya 462-8508, Japan
| | - Norio Katoh
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine, North-15 West-7, Kita-ku, Sapporo 060-8638, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Motohisa Suzuki
- Department of Radiology, Southern Tohoku Proton Therapy Center, 7-172 Yatsuyamada, Koriyama, Fukushima 963-8052, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8575, Japan
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Fujinaka R, Komatsu S, Terashima K, Demizu Y, Omiya S, Kido M, Toyama H, Tokumaru S, Okimoto T, Fukumoto T. Clinical impact of spacer placement surgery with expanded polytetrafluoroethylene sheet for particle therapy. Radiat Oncol 2023; 18:173. [PMID: 37875956 PMCID: PMC10594906 DOI: 10.1186/s13014-023-02359-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 10/07/2023] [Indexed: 10/26/2023] Open
Abstract
BACKGROUND Spacer placement surgery is useful in particle therapy (PT) for patients with abdominopelvic malignant tumors located adjacent to the gastrointestinal tract. This study aimed to assess the safety, efficacy, and long-term outcomes of spacer placement surgery using an expanded polytetrafluoroethylene (ePTFE) spacer. METHODS This study included 131 patients who underwent ePTFE spacer placement surgery and subsequent PT between September 2006 and June 2019. The overall survival (OS) and local control (LC) rates were calculated using Kaplan-Meier method. Spacer-related complications were classified according to the National Cancer Institute Common Terminology Criteria for Adverse Events (version 5.0). RESULTS The median follow-up period after spacer placement surgery was 36.8 months. The 3-year estimated OS and LC rates were 60.5% and 76.5%, respectively. A total of 130 patients (99.2%) were able to complete PT. Spacer-related complications of ≥ grade 3 were observed in four patients (3.1%) in the acute phase and 13 patients (9.9%) in the late phase. Ten patients (7.6%) required removal of the ePTFE spacer. CONCLUSIONS Spacer placement surgery using an ePTFE spacer for abdominopelvic malignant tumors is technically feasible and acceptable for subsequent PT. However, severe spacer-related late complications were observed in some patients. Since long-term placement of a non-absorbable ePTFE spacer is associated with risks for morbidity and infection, careful long-term follow-up and prompt therapeutic intervention are essential when complications associated with the ePTFE spacer occur. TRIAL REGISTRATION retrospectively registered.
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Affiliation(s)
- Ryosuke Fujinaka
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Hyogo, Japan
| | - Shohei Komatsu
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Hyogo, Japan.
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, 679-5165, Hyogo, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, 679-5165, Hyogo, Japan
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, 1-6-8 Minatojimaminami-machi, Chuo-ku, Kobe, 650-0047, Hyogo, Japan
| | - Satoshi Omiya
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Hyogo, Japan
| | - Masahiro Kido
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Hyogo, Japan
| | - Hirochika Toyama
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Hyogo, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, 679-5165, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, 679-5165, Hyogo, Japan
| | - Takumi Fukumoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Hyogo, Japan
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7
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Yamaguchi H, Fukumitsu N, Numajiri H, Ogino H, Katoh N, Okimoto T, Sakurai H. The Japanese Nationwide Cohort Data of Particle Beam Therapy for Liver Oligometastasis in Esophagogastric Cancer Patients. Int J Radiat Oncol Biol Phys 2023; 117:e351-e352. [PMID: 37785217 DOI: 10.1016/j.ijrobp.2023.06.2427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) A nationwide multicenter cohort study on particle therapy was launched by the Japanese Society for Radiation Oncology (JASTRO) in Japan in May 2016. We analyzed the outcome of proton beam therapy (PBT) for liver oligometastasis of esophagogastric cancers. MATERIALS/METHODS Cases in which PBT was performed at all PBT facilities in Japan between May 2016 and February 2019 were enrolled. The patients were selected based on the following criteria: controlled primary cancer; liver recurrence without extrahepatic tumors; and no more than three liver lesions. The dose and fraction of PBT were determined using unified treatment policy established by JASTRO. We used the following protocol, 64 gray (relative biological effect) (Gy (RBE))/8 fractions (fr) for the peripheral region, and 72.6 GyE/22fr for the central region. For safety aspect, the hepatocellular carcinoma irradiation protocols of 66 Gy (RBE)/10fr, 72.6-76 Gy (RBE)/20-22fr, and 74-76 Gy (RBE)/37-38fr could be allowed. The overall survival (OS), local control (LC), and adverse events (AEs) were examined. The OS and LC rates were calculated using the Kaplan-Meier method. Factors possibly related to OS, such as tumor size (for multiple lesions, the largest size), number of liver tumors, as well as the presence or absence of prior, concurrent, and post-PBT chemotherapy, were investigated. The cut-off values were estimated using the receiver operating characteristic curve and area under the curve. Univariate analysis was performed using the log-rank test. Statistical significance was P-values < 0.05. RESULTS Twenty-three males and two females with a median age of 69 (range, 52-80) years and 36 lesions were included. This study included six patients with esophageal and 19 patients with gastric cancer. The median lesion size, fraction size, and biological effective dose (BED)10 were 31 (7-104) mm, 3.8 gray (relative biological effect)/fractions (Gy (RBE)/fr) (2-8 Gy (RBE)/fr), and 96.9 (88.8-115.2) Gy, respectively. The median follow-up period was 18 (4-47) months. The 1-, 2-, and 3-year OS rates were 76.0, 49.5, and 43.3%, respectively, and the median OS was 19 months. The 1-, 2-, and 3-year OS rates of esophageal cancer were 83.3% for all. The 1-, 2-, and 3-year OS rates of gastric cancer were 73.7, 40.2, and 32.2%, respectively, and the median OS was 18 months. The 1-, 2-, and 3-year LC rates were 96.3, 91.5, and 91.5%, respectively. The 1-, 2-, and 3-year LC rates of esophageal cancer were 100% for all. The 1-, 2-, and 3-year LC rates of gastric cancers were 94.7, 88.0, and 88.0%, respectively. Tumor size was the only significant OS-related factor (P < 0.01). No grade 3 or higher adverse events were observed. CONCLUSION Owing to the low incidence of adverse events and the high LC rate, PBT is a feasible option for liver oligometastasis of esophagogastric cancers.
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Affiliation(s)
- H Yamaguchi
- Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, Japan
| | | | - H Numajiri
- Department of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - H Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - N Katoh
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - H Sakurai
- Departement of Radiation Oncology and Proton Medical Research Center, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
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Yamaguchi H, Fukumitsu N, Numajiri H, Ogino H, Okimoto T, Ogino T, Nishimura T. The Japanese Nationwide Cohort Data of Proton Beam Therapy for Liver Oligometastasis in Breast Cancer Patients. Int J Radiat Oncol Biol Phys 2023; 117:e352. [PMID: 37785219 DOI: 10.1016/j.ijrobp.2023.06.2428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) A nationwide multicenter cohort study on particle therapy was launched by the Japanese Society for Radiation Oncology (JASTRO) in Japan. We analyzed the outcome of proton beam therapy (PBT) for liver oligometastasis in breast cancers. MATERIALS/METHODS Cases in which PBT was performed at all Japanese proton therapy facilities between May 2016 and February 2019 were enrolled. The patients were selected based on the following criteria: the primary cancer was controlled, liver recurrence without extrahepatic tumors, and no more than three liver lesions. The treatment indication and strategy were discussed at cancer boards in each institution. The dose and fraction of PBT were determined by referring to the unified treatment policy established by JASTRO. We used the following protocol: 64 gray (Gy) (relative biological effectiveness [RBE])/8 fraction (fr) for the hepatic periphery area away from the GI tract, and 72.6 GyE/22 fr for the adjacent hilar region type. Regarding safety, the HCC irradiation protocols of 66 GyE/10 fr, 72.6-76 GyE/20-22 fr, and 74-76 GyE/37-38 fr could be used. The local control (LC), overall survival (OS), and progression free survival (PFS) rates were calculated using the Kaplan-Meier method. Factors possibly related to OS, such as tumor size, number of liver tumors, intervention of chemotherapy, and/or hormone therapy, were investigated. The cut-off values were estimated using the receiver operating characteristic curve and area under the curve. Univariate analysis was performed using the log-rank test. RESULTS Fourteen females, with a median age of 57 (range, 44-73) years and twenty-two lesions were included. Nine patients had one lesion, two patients had two lesions, and three patients had three lesions. PBT was selected because nine patients had underlying disease and five patients had general conditions (age, etc.). The median lesion size, fraction size, and biological effective dose using the linear-quadratic model with α/β = 10 Gy ((BED)10) were 44 (20-130) mm, 6.6 (2-8) (relative biological effectiveness [RBE])/fraction (fr), and 109.6 (52.7-115.2) Gy, respectively. The median follow-up period of breast cancers was 22.8 (4-54) months. The 1-, 2-, and 3-year LC rates of liver metastasis from breast cancers were 100% for all. The 1-, 2-, and 3-year OS rates were 85.7%, 62.5%, and 62.5%, respectively. The 1-, 2-, and 3-year PFS rates were 50.0%, 33.3%, and 16.7%, respectively, and median PFS time was 16 months. Tumor size, the number of liver tumors, and the intervention of chemotherapy and/or hormone therapy at any time were not significantly related to the OS. Only one patient did not complete PBT due to current disease progression. The other patients completed PBT without interruption. One patient had grade 3 radiation-induced dermatitis. CONCLUSION Based on the low incidence of adverse events and the high LC rate, PBT appears to be a feasible option for liver oligometastasis in breast cancer patients.
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Affiliation(s)
- H Yamaguchi
- Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, Japan
| | | | - H Numajiri
- Department of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - H Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - T Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - T Ogino
- Medipolis Proton Therapy and Research Center, Ibusuki, Japan
| | - T Nishimura
- Radiation and Proton Therapy Center, Shizuoka Cancer Center, Shizuoka, Japan
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Ami K, Terashima K, Ishida J, Suga M, Okawa T, Takahashi D, Park S, Matsuo Y, Nanno Y, Tokumaru S, Okimoto T, Toyama H, Fukumoto T. Proton radiotherapy as a treatment strategy to increase survival in locally advanced pancreatic cancer in the body and tail: a retrospective study. Radiat Oncol 2023; 18:131. [PMID: 37553705 PMCID: PMC10408146 DOI: 10.1186/s13014-023-02301-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 06/19/2023] [Indexed: 08/10/2023] Open
Abstract
BACKGROUND Long-term outcomes and prognostic factors of proton radiotherapy for locally advanced pancreatic cancer (LAPC) in the body and tail are still unknown. The aim of this study was to determine the prognostic factors after proton radiotherapy in a large group of patients with LAPC in the body and tail. METHODS The medical records of 200 patients with LAPC in the body and tail who underwent proton radiotherapy between February 2009 and January 2021 at the Hyogo Ion Beam Medical Center were retrospectively reviewed to identify prognostic factors that contribute to long-term survival. RESULTS The overall survival rate at 1- and 2-year after PT was 69.6% and 35.4% with a median overall survival of 18.4 months. The 1- and 2-year local progression-free, and progression-free survival rates were 84.3% and 68.0%, and 44.3% and 19.4%, respectively. In multivariate analysis, superior mesenteric artery (SMA) invasion (SMA only invasion vs. celiac artery only invasion; P = 0.049: SMA and celiac artery invasion vs. celiac artery only invasion; P = 0.017), carbohydrate antigen 19-9 (CA 19-9) level ≥ 231.9 U/mL (P = 0.001), anterior peripancreatic invasion (P = 0.006), and incomplete scheduled concurrent chemotherapy (P = 0.009) were statistically significant prognostic factors for overall survival. There was no significant difference in local progression-free survival; however, distant metastasis-free survival was statistically worse in patients with prognostic factors than in those without. CONCLUSIONS Proton radiotherapy for LAPC in the body and tail may be a valuable multidisciplinary treatment option. Patients with SMA invasion, higher pre-proton radiotherapy serum CA 19-9 level, anterior peripancreatic invasion, or incomplete scheduled concurrent chemotherapy had worse overall survival because of worse distant metastasis-free survival, suggesting that distant metastases have a significant impact on overall survival in such patients. TRIAL REGISTRATION Retrospectively registered.
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Affiliation(s)
- Katsuya Ami
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Jun Ishida
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Taisuke Okawa
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Daiki Takahashi
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - SungChul Park
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Yoshihide Nanno
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Hirochika Toyama
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
| | - Takumi Fukumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
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Yamazaki H, Shibuya K, Kimoto T, Suzuki M, Murakami M, Terashima K, Okimoto T, Iizumi T, Sakurai H, Wakatsuki M, Suzuki O, Katoh N, Arimura T, Ogino T, Takagi M, Araya M, Waki T, Matsumoto S, Ogino H, Fukumoto T, Ohtsuka M. Proton beam therapy for extrahepatic biliary tract cancer: Analysis with prospective multi-institutional patients' registration database, Proton-Net. Clin Transl Radiat Oncol 2023; 41:100634. [PMID: 37234735 PMCID: PMC10206422 DOI: 10.1016/j.ctro.2023.100634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 04/24/2023] [Accepted: 05/01/2023] [Indexed: 05/28/2023] Open
Abstract
Background and purpose To examine the role of proton beam therapy (PBT) in the treatment of extrahepatic biliary tract cancer (EBC). Methods and materials We analyzed the data accumulated in the Proton-Net database, which prospectively registered all individual patient data treated with PBT in all Japanese proton institutions from May 2016 to June 2019. The primary endpoint was overall survival (OS), and the secondary endpoints were local control (LC), progression-free survival (PFS), and toxicity. Results Ninety-three patients with unresectable and/or recurrent EBC were treated with PBT using a median prescribed dose of 67.5 Gy (RBE) (range, 50-72.6 Gy) in 25 (22-30 fractions). With a median follow-up of 16.3 months, the median survival time was 20.1 months and the 2-year OS was 37.8%. Two-year PFS and LC rates were 20.6% and 66.5%, respectively. Poor liver function (Child-Pugh B, C), a narrower distance between the tumor and digestive tract (2 cm >), and a larger tumor diameter (2 cm <) were identified as poor prognostic factors for OS. PBT-related grade 3 ≤ acute and late adverse events occurred in 5.4% and 4.3% of patients, respectively, including one gastrointestinal late toxicity (duodenal ulcer). Conclusions This is the largest prospectively accumulated series of PBT for EBC, and PBT showed favorable outcomes with acceptable toxicity profiles.
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Affiliation(s)
- Hideya Yamazaki
- Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kei Shibuya
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Takuya Kimoto
- Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Motohisa Suzuki
- Department of Radiation Oncology, Southern TOHOKU Proton Therapy Center, Koriyama, Japan
| | - Masao Murakami
- Department of Radiation Oncology, Southern TOHOKU Proton Therapy Center, Koriyama, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo, Japan
| | - Takashi Iizumi
- Department of Radiation Oncology, Proton Medical Research Center, University of Tsukuba Hospital, Tsukuba, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, Proton Medical Research Center, University of Tsukuba Hospital, Tsukuba, Japan
| | - Masaru Wakatsuki
- QST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Osamu Suzuki
- Osaka Heavy Ion Administration Company, Otemae, Chuo-ku, Osaka-city, Osaka, Japan
| | - Norio Katoh
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine, Sapporo, Hokkaido, Japan
| | - Takeshi Arimura
- Medipolis Proton Therapy and Research Center, Ibusuki, Kagoshima, Japan
| | - Takashi Ogino
- Medipolis Proton Therapy and Research Center, Ibusuki, Kagoshima, Japan
| | - Masaru Takagi
- Proton Therapy Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
| | - Masayuki Araya
- Proton Therapy Center, Aizawa Hospital, Matsumoto, Nagano, Japan
| | - Takahiro Waki
- Department of Radiology, Tsuyama Chuo Hospital, Tsuyama, Okayama, Japan
| | - Sae Matsumoto
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Fukui, Japan
| | - Hiroyuki Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - Takumi Fukumoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masayuki Ohtsuka
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
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11
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Omiya S, Komatsu S, Terashima K, Yamasaki N, Matsuo Y, Toyama H, Tokumaru S, Okimoto T, Fukumoto T. Hepatic Resection vs Particle Therapy as an Initial Treatment for Single Hepatocellular Carcinoma: Bi-institutional Propensity Score-Matched Analysis. J Am Coll Surg 2023; 236:972-981. [PMID: 36537706 DOI: 10.1097/xcs.0000000000000532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Curative treatment for hepatocellular carcinoma (HCC) is limited to hepatic resection (HR), radiofrequency ablation, and liver transplantation, but the value of particle therapy (PT) as an initial treatment remains unclear. This study aimed to compare the outcomes of HR and PT for single HCC. STUDY DESIGN A total of 554 patients with single HCC without vascular invasion were enrolled from January 2000 to December 2015. Patients underwent either HR (n = 279) or PT (n = 275) as initial treatments. A one-to-one propensity score-matching analysis was performed to evaluate the overall survival (OS) and progression-free survival after dividing patients according to liver function as assessed by the modified albumin-bilirubin grade. RESULTS The median OS (130 vs 85 months, p = 0.001) and progression-free survival (47 vs 30 months HR, p = 0.004) of HR were also significantly better than that of PT in the propensity score-matching cohort with modified albumin-bilirubin grade 1/2a (n = 145 per group). Meanwhile, in a propensity score-matching cohort with modified albumin-bilirubin grade 2b/3 (n = 53 per group), there were no significant differences in median OS and progression-free survival between HR and PT. CONCLUSIONS HR may be preferable as an initial treatment for patients with single HCC without vascular invasion, especially those with preserved liver function. PT can be an acceptable alternative to HR for patients without surgical indication and/or impaired liver function.
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Affiliation(s)
- Satoshi Omiya
- From the Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan (Omiya, Komatsu, Yamasaki, Toyama, Fukumoto)
| | - Shohei Komatsu
- From the Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan (Omiya, Komatsu, Yamasaki, Toyama, Fukumoto)
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan (Terashima, Matsuo, Tokumaru, Okimoto)
| | - Nobuaki Yamasaki
- From the Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan (Omiya, Komatsu, Yamasaki, Toyama, Fukumoto)
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan (Terashima, Matsuo, Tokumaru, Okimoto)
| | - Hirochika Toyama
- From the Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan (Omiya, Komatsu, Yamasaki, Toyama, Fukumoto)
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan (Terashima, Matsuo, Tokumaru, Okimoto)
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan (Terashima, Matsuo, Tokumaru, Okimoto)
| | - Takumi Fukumoto
- From the Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan (Omiya, Komatsu, Yamasaki, Toyama, Fukumoto)
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12
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Aibe N, Ogino H, Wakatsuki M, Fujikawa K, Teramukai S, Fukumitsu N, Shiba S, Yamamoto N, Nomoto A, Ono T, Oguri M, Yamaguchi H, Numajiri H, Shibuya K, Okazaki S, Miyasaka Y, Okonogi N, Murata K, Tatebe H, Motegi A, Okimoto T, Yoshino T, Mandai M, Katoh N, Tsuji H, Sakurai H. Comprehensive analysis of Japanese nationwide cohort data of particle beam therapy for pulmonary, liver and lymph node oligometastases: particle beam therapy versus high-precision X-ray radiotherapy. J Radiat Res 2023:rrad004. [PMID: 37053162 DOI: 10.1093/jrr/rrad004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/29/2022] [Indexed: 06/19/2023]
Abstract
Japanese national oncological experts convened to evaluate the efficacy and safety of particle beam therapy (PT) for pulmonary, liver and lymph node oligometastases (P-OM, L-OM and LN-OM, respectively) and to conduct a statistically comparative analysis of the local control (LC) rate and overall survival (OS) rate of PT versus those of X-ray stereotactic body radiotherapy (X-SBRT) and X-ray intensity-modulated radiotherapy (X-IMRT). They conducted [1] an analysis of the efficacy and safety of metastasis-directed therapy with PT for P-OM, L-OM and LN-OM using a Japanese nationwide multi-institutional cohort study data set; [2] a systematic review of X-ray high-precision radiotherapy (i.e. X-SBRT/X-IMRT) and PT for P-OM, L-OM and LN-OM; and [3] a statistical comparison between LC and OS of the cohort data set in PT and that of the extracted historical data set in X-SBRT/X-IMRT from the preceding systematic review. Safety was evaluated as the incidence of grade ≥ 3 adverse events, while statistical comparisons of LC and OS were conducted by estimating the incidence rate ratios (IRR) for local progression and mortality, respectively. This study demonstrated that PT provided durable LC (3-year LC rate: 72.8-83.2%) with acceptable OS (3-year OS rate: 38.5-68.1%) and risk of severe toxicity incidence of 0.8-3.5% in radical metastasis-directed therapy for P-OM, L-OM and LN-OM. Compared to LC with X-SBRT or X-IMRT, LC with PT was potentially superior for P-OM; superior for L-OM; and equivalent for LN-OM. In particular, this study demonstrated that PT may be a new treatment option for L-OM tumors measuring > 5 cm.
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Affiliation(s)
- Norihiro Aibe
- Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Hiroyuki Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya 462-8508, Japan
| | - Masaru Wakatsuki
- QST Hospital, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Kei Fujikawa
- Department of Biostatistics, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Satoshi Teramukai
- Department of Biostatistics, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | | | - Shintaro Shiba
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
| | - Naoyoshi Yamamoto
- QST Hospital, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Akihiro Nomoto
- QST Hospital, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Takashi Ono
- Department of Radiation Oncology, Yamagata University, Faculty of Medicine, Yamagata 990-9585, Japan
| | - Masanosuke Oguri
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya 462-8508, Japan
| | - Hisashi Yamaguchi
- Department of Radiology, Southern Tohoku Proton Therapy Center, Koriyama City, Fukushima 963-8052, Japan
| | - Haruko Numajiri
- Department of Radiation Oncology, University of Tsukuba, Ibaraki 305-8550, Japan
| | - Kei Shibuya
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
| | - Shohei Okazaki
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
| | - Yuhei Miyasaka
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
| | - Noriyuki Okonogi
- QST Hospital, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Kazutoshi Murata
- QST Hospital, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Hitoshi Tatebe
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui 910-0846, Japan
| | - Atsushi Motegi
- Department of Radiation Oncology, National Cancer Center Hospital East, Chiba 277-8577, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo, Japan
| | - Takayuki Yoshino
- Department of Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - Masaki Mandai
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto 606-8501, Japan
| | - Norio Katoh
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine, Hokkaido 060-0808, Japan
| | - Hiroshi Tsuji
- QST Hospital, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, University of Tsukuba, Ibaraki 305-8550, Japan
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Ishikawa H, Arimura T, Maruo K, Kawamura H, Toyama S, Ogino T, Okimoto T, Murakami M, Sato Y, Nishioka K, Araya M, Ohba H, Umehara K, Aoyama H, Obara W, Azuma H, Tsuji H, Sakurai H. A Japanese registry study and systematic review of particle therapy for renal cell carcinoma. J Radiat Res 2023:rrad010. [PMID: 37045797 DOI: 10.1093/jrr/rrad010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/29/2023] [Indexed: 06/19/2023]
Abstract
The feasibility and efficacy of particle beam therapy (PBT) using protons or carbon ions were compared with those of photon-based stereotactic body radiotherapy (SBRT) for primary renal cell carcinoma (RCC) via a systematic review and nationwide registry for PBT (Japanese Society for Radiation Oncology [JASTRO] particle therapy committee). Between July 2016 and May 2019, 20 patients with non-metastatic RCC who were treated at six Japanese institutes (using protons at three, using carbon ions at the other three) were registered in the nationwide database and followed up prospectively. The 20 patients comprised 15 men and had a median age of 67 (range: 57-88) years. The total radiation dose was 66-79.6 Gy (relative biological effectiveness [RBE]). Over a median follow up of 31 months, the 3-year rates of overall survival (OS) and local control (LC) were 100% and 94.4%, respectively. No grade ≥ 3 toxicities were observed. Based on a random effects model, a meta-analysis including the present results revealed 3-year OS rates after SBRT and PBT of 75.3% (95% CI: 57.3-86.6) and 94.3% (95% CI: 86.8-97.6), respectively (P = 0.005), but the difference in LC rates between the two methods was not observed (P = 0.63). PBT is expected to have similar if not better treatment results compared with SBRT for primary renal cancer. In particular, PBT was shown to be effective even for large RCC and could provide a therapeutic option when SBRT is not indicated.
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Affiliation(s)
- Hitoshi Ishikawa
- QST Hospital, National Institutes for Quantum Science and Technology, Inage, Chiba 263-8555, Japan
- Department of Radiation Oncology, University of Tsukuba, Faculty of Medicine, Tsukuba, Ibaraki 305-8575, Japan
| | - Takeshi Arimura
- Medipolis Proton Therapy and Research Center, Ibusuki, Kagoshima 891-0304, Japan
| | - Kazushi Maruo
- Department of Biostatistics, University of Tsukuba, Faculty of Medicine, Tsukuba, Ibaraki 305-8575, Japan
| | - Hidemasa Kawamura
- Gunma University Heavy Ion Medical Center, Maebashi, Gunma 371-8511, Japan
| | - Shingo Toyama
- Ion Beam Therapy Center, SAGA-HIMAT Foundation, Tosu, Saga 841-0071, Japan
| | - Takashi Ogino
- Medipolis Proton Therapy and Research Center, Ibusuki, Kagoshima 891-0304, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo 679-5165, Japan
| | - Masao Murakami
- Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, Fukushima 963-8052 Japan
| | - Yoshitaka Sato
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Fukui 910-8526, Japan
| | - Kentaro Nishioka
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Hokkaido 060-8638, Japan
| | - Masayuki Araya
- Proton Therapy Centre, Aizawa Hospital, Matsumoto, Nagano 390-8510, Japan
| | - Hisateru Ohba
- QST Hospital, National Institutes for Quantum Science and Technology, Inage, Chiba 263-8555, Japan
| | - Kensuke Umehara
- QST Hospital, National Institutes for Quantum Science and Technology, Inage, Chiba 263-8555, Japan
| | - Hidefumi Aoyama
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine, Hokkaido 060-8638, Japan
| | - Wataru Obara
- Department of Urology, Iwate Medical University, School of Medicine, Yahaba-Cho, Iwate 028-3694, Japan
| | - Haruhito Azuma
- Department of Urology, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka 569-8686, Japan
| | - Hiroshi Tsuji
- QST Hospital, National Institutes for Quantum Science and Technology, Inage, Chiba 263-8555, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, University of Tsukuba, Faculty of Medicine, Tsukuba, Ibaraki 305-8575, Japan
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Toki S, Nishisho T, Miyagi R, Bando Y, Sakaki M, Demizu Y, Okimoto T, Sairyo K. Combination chemotherapy of doxorubicin and ifosfamide with proton beam therapy for myoepithelial carcinoma originating in the paraspinal region: A case report and literature review. Mol Clin Oncol 2022; 17:163. [DOI: 10.3892/mco.2022.2596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/16/2022] [Indexed: 11/07/2022] Open
Affiliation(s)
- Shunichi Toki
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770‑8503, Japan
| | - Toshihiko Nishisho
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770‑8503, Japan
| | - Ryo Miyagi
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770‑8503, Japan
| | - Yoshimi Bando
- Division of Pathology, Tokushima University Hospital, Tokushima 770‑8503, Japan
| | - Mika Sakaki
- Division of Pathology, Tokushima University Hospital, Tokushima 770‑8503, Japan
| | - Yusuke Demizu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo 650‑0047, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo 679‑5165, Japan
| | - Koichi Sairyo
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770‑8503, Japan
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Masuda T, Nakaura T, Funama Y, Oda S, Okimoto T, Sato T, Noda N, Yoshiura T, Baba Y, Arao S, Hiratsuka J, Awai K. Corrigendum to “Deep learning with convolutional neural network for estimation of the characterisation of coronary plaques: Validation using IB-IVUS” [Radiography 28 (2022) 61–67]. Radiography (Lond) 2022; 28:661-662. [DOI: 10.1016/j.radi.2022.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Hashimoto Y, Komatsu S, Terashima K, Tsugawa D, Yanagimoto H, Suga M, Demizu Y, Tokumaru S, Okimoto T, Sasaki R, Ajiki T, Fukumoto T. Space-Making Particle Therapy for Unresectable Hilar Cholangiocarcinoma. Dig Surg 2022; 39:99-108. [PMID: 35462363 DOI: 10.1159/000524582] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 04/09/2022] [Indexed: 01/03/2023]
Abstract
INTRODUCTION Although the primary treatment option for hilar cholangiocarcinoma (HC) has been surgical resection, most patients present with unresectable advanced tumors at the time of diagnosis. Particle therapy (PT) holds great potential for HC, even though the anatomical proximity to the gastrointestinal tract prevents delivering a radical dose to the tumor. Space-making PT (SMPT), consisting of spacer placement surgery and subsequent PT, has been developed to minimize complications and maximize the therapeutic benefit of dose escalation for HC. This study aimed to conduct a dosimetric evaluation and examine the effectiveness of SMPT for the treatment of HC. METHODS Between 2007 and 2018, 12 patients with unresectable HC treated with SMPT were enrolled. The treatment outcomes and effectiveness of spacer placement surgery were evaluated through analyses of pre- and post-surgical parameters of dose-volume histograms. RESULTS All patients completed the planned SMPT protocol. The median survival time was 29.6 months, and the 1- and 3-year overall survival rates were 82.5% and 45.8%, respectively. The mean V95% value (volume irradiated with 95% of the planned treatment dose) of the gross tumor volume and clinical target volume after spacer placement surgery improved to 98.5% and 96.6% from preoperative values of 85.6% and 78.1%, respectively (p = 0.0196 and p = 0.0053, respectively). Grade 3 or higher adverse events after SMPT were seen in 6 patients. DISCUSSION/CONCLUSION SMPT led to improvements in dosimetric parameters and showed good feasibility and excellent outcomes. SMPT can be a promising novel alternative for unresectable HC.
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Affiliation(s)
- Yu Hashimoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shohei Komatsu
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Daisuke Tsugawa
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroaki Yanagimoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan.,Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Ryohei Sasaki
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tetsuo Ajiki
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Fukumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Masuda T, Funama Y, Nakaura T, Sato T, Okimoto T, Gotanda R, Arao K, Imaizumi H, Arao S, Ono A, Hiratsuka J, Awai K. Radiation dose reduction method combining the ECG-Edit function and high helical pitch in retrospectively-gated CT angiography. Radiography (Lond) 2022; 28:766-771. [PMID: 35428572 DOI: 10.1016/j.radi.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 03/14/2022] [Accepted: 03/17/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION The purpose of this study was to demonstrate that dose reduction does not compromise image quality when combining high helical pitch (HP) and the ECG-Edit function during low HP retrospectively gated computed tomography angiography (CTA). METHODS This study made use of a pulsating cardiac phantom (ALPHA 1 VTPC). The heart rate (HR) of the cardiac phantom was changed in five intervals, every 5 beats per minute (bpm), from 40 to 60 bpm. Evaluation of a range of HR was important because data loss might occur when combining a low HR and high HP. We performed retrospectively gated CTA scans five times using a low HP (0.16) and high HP (0.24), for each of the five HR intervals, using a 64-detector row CT scanner. The CT volume dose index (CTDIvol) was recorded from the CT console of each scan. For the images with data loss, data were repaired using the ECG-Edit function. We compared the CTDIvol, estimated cardiac phantom volume, and the visualization of the coronary ladder phantom between HP 0.16, with or without repaired HP 0.24, using the ECG-Edit function. RESULTS Data loss occurred with a HR of 40 bpm and 45 bpm when using HP 0.24. The CTDIvol was reduced by approximately 33% with HP 0.24 when compared with HP 0.16. There were no significant differences in the mean cardiac motion phantom volume and visualization scores between HP 0.16 and with and without repaired HP 0.24 using the ECG-Edit function (p < 0.05). CONCLUSION The ECG-Edit function is potential useful for repairing the lost data in patients with a low HR, and when combined with a high HP, it is possible to reduce the radiation dose by approximately 33%. IMPLICATIONS FOR PRACTICE The ECG-Edit function and high HP may be a viable option in pediatric CTA studies.
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Affiliation(s)
- T Masuda
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan.
| | - Y Funama
- Department of Medical Physics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - T Nakaura
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto 860-8556, Japan
| | - T Sato
- Department of Diagnostic Radiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - T Okimoto
- Department of Cardiovascular Internal Medicine, Edogawa Hospital, Tokyo, Japan
| | - R Gotanda
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - K Arao
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - H Imaizumi
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - S Arao
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - A Ono
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - J Hiratsuka
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - K Awai
- Department of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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18
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Takahashi D, Demizu Y, Koto M, Kubo N, Suefuji H, Ikawa H, Ohno T, Shioyama Y, Okimoto T, Tsuji H. Multicenter study of re-irradiation using carbon-ions for head and neck malignancies after photon radiotherapy. Cancer Med 2022; 11:3593-3601. [PMID: 35393701 PMCID: PMC9554451 DOI: 10.1002/cam4.4741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 11/25/2022] Open
Abstract
Purpose The goal of this multicenter retrospective study of patients with head and neck malignancies was to evaluate the efficacy and safety of carbon‐ion (C‐ion) radiotherapy (RT) after photon RT. Methods We enrolled 56 patients with head and neck malignancies who underwent re‐irradiation (re‐RT) using C‐ions between November 2003 and March 2019, treated previously with photon RT. The tumors at re‐RT were located in the sinonasal cavities (n = 20, 35.7%), skull base (n = 12, 21.4%), and orbit (n = 7, 12.5%). The tumors at the initial RT were located in the sinonasal cavities (n = 13, 23.2%), skull base (n = 9, 16.1%), and orbit (n = 9, 16.1%). The median period between the initial RT and re‐RT was 41 (4–568) months. The most common histology of re‐RT was squamous cell carcinoma (n = 11, 19.6%). The most commonly used protocol was 57.6 Gy (relative biological effectiveness) in 16 fractions (n = 23, 41.1%). Surgery preceded re‐RT in three patients (5.4%). One patient with malignant melanoma received concurrent chemotherapy. Results The 2‐year local control, progression‐free survival, and overall survival rates were 66.5%, 36.9%, and 67.9%, respectively. The median follow‐up time was 28 months. Two patients (3.6%) developed grade ≥ 3 acute toxicities, and 14 (25.0%) developed grade ≥ 3 late toxicities. A single patient had confirmed grade 5 dermatitis with infection. Conclusion Re‐RT using C‐ions for head and neck malignancies after photon RT is an effective treatment with tolerable toxicity.
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Affiliation(s)
- Daiki Takahashi
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan.,Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Japan
| | - Masashi Koto
- QST Hospital, National Institutes for Quantum Sciences and Technology, Chiba, Japan
| | - Nobuteru Kubo
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | | | - Hiroaki Ikawa
- QST Hospital, National Institutes for Quantum Sciences and Technology, Chiba, Japan
| | - Tatsuya Ohno
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | | | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Hiroshi Tsuji
- QST Hospital, National Institutes for Quantum Sciences and Technology, Chiba, Japan
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Ogura Y, Terashima K, Nanno Y, Park S, Suga M, Takahashi D, Matsuo Y, Sulaiman NS, Tokumaru S, Okimoto T, Toyama H, Fukumoto T. Factors associated with long-term survival in gemcitabine-concurrent proton radiotherapy for non-metastatic locally advanced pancreatic cancer: a single-center retrospective study. Radiat Oncol 2022; 17:32. [PMID: 35144647 PMCID: PMC8832744 DOI: 10.1186/s13014-022-02001-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/31/2022] [Indexed: 11/17/2022] Open
Abstract
Background Factors associated with long-term survival in gemcitabine-concurrent proton radiotherapy (GPT) for non-metastatic, locally advanced pancreatic cancer (LAPC) remain unclear. This study aimed to determine the factors associated with long-term survival in GPT for non-metastatic LAPC.
Methods The medical records of 123 patients with LAPC treated with GPT between February 2009 and December 2019 at Hyogo Ion Beam Medical Center were retrospectively reviewed to assess the factors associated with long-term survival outcomes. Results The median overall survival of the total cohort treated with GPT was 18.7 months. The 1- and 2-year overall, local progression-free, and progression-free survival rates were 70.4% and 35.7%, 78.2% and 59.0%, and 38.6% and 20.8%, respectively. Multivariate analysis revealed that LAPCs at the pancreatic body-tail and those without anterior peripancreatic invasion were independently associated with longer overall survival (P = 0.040 and P = 0.015, respectively). The median overall survival of patients with LAPC at the pancreatic body-tail and those with LAPC without anterior peripancreatic invasion were 24.1 and 28.1 months, respectively. LAPCs at the pancreatic body-tail had a higher volume ratio irradiated over 60 Gy equivalents at gross tumor volume than those at the pancreatic head (P < 0.001). LAPCs with anterior peripancreatic invasion had more peritoneal recurrence within 6 months after GTP than those without anterior peripancreatic invasion (P = 0.039). Conclusions GPT is a promising treatment option for patients with LAPC at the pancreatic body-tail and those with LAPC without anterior peripancreatic invasion.
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Affiliation(s)
- Yuta Ogura
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.,Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Yoshihide Nanno
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - SungChul Park
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Bseam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Daiki Takahashi
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Nor Shazrina Sulaiman
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Hirochika Toyama
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
| | - Takumi Fukumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
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20
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Park S, Demizu Y, Suga M, Taniguchi S, Tanaka S, Maehata I, Takeda M, Takahashi D, Matsuo Y, Sulaiman NS, Terashima K, Tokumaru S, Furukawa K, Okimoto T. Predicted probabilities of brain injury after carbon ion radiotherapy for head and neck and skull base tumors in long-term survivors. Radiother Oncol 2021; 165:152-158. [PMID: 34718054 DOI: 10.1016/j.radonc.2021.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 10/13/2021] [Accepted: 10/18/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND PURPOSE We aimed to determine the risk factors for radiation-induced brain injury (RIBI1) after carbon ion radiotherapy (CIRT) to predict their probabilities in long-term survivors. MATERIALS AND METHODS We evaluated 104 patients with head, neck, and skull base tumors who underwent CIRT in a regimen of 32 fractions and were followed up for at least 24 months. RIBI was assessed using the Common Terminology Criteria for Adverse Events. RESULTS The median follow-up period was 45.5 months; 19 (18.3 %) patients developed grade ≥2 RIBI. The maximal absolute dose covering 5 mL of the brain (D5ml) was the only significant risk factor for grade ≥2 RIBI in the multivariate logistic regression analysis (p = 0.001). The tolerance doses of D5ml for the 5% and 50% probabilities of developing grade ≥2 RIBI were estimated to be 55.4 Gy (relative biological effectiveness [RBE]) and 68.4 Gy (RBE) by a logistic model, respectively. CONCLUSION D5ml was most significantly associated with grade ≥2 RIBI and may enable the prediction of its probability.
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Affiliation(s)
- SungChul Park
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan.
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan; Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Shingo Taniguchi
- Department of Radiation Technology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Shinichi Tanaka
- Department of Radiation Technology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Itsumi Maehata
- Department of Radiation Technology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Mikuni Takeda
- Department of Radiation Technology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Daiki Takahashi
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | | | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Kyoji Furukawa
- Biostatistics Center, Kurume University Graduate School of Medicine, Fukuoka, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
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Sakuda T, Furuta T, Okimoto T, Adachi N. Giant cell tumor of the cervical spine treated by carbon ion radiotherapy: A case report. Medicine (Baltimore) 2021; 100:e27393. [PMID: 34731109 PMCID: PMC8519221 DOI: 10.1097/md.0000000000027393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/15/2021] [Indexed: 01/05/2023] Open
Abstract
INTRODUCTION Giant cell tumor (GCT) of the bone is a benign-malignant intermediate tumor with locally destructive growth and a relatively high local recurrence rate. Neurological symptoms may develop in patients with GCT of the spine, and surgical treatment is prioritized in cases where resection is possible. However, the local recurrence rate of GCT of the bone is higher than that of GCT at other sites owing to the associated surgical challenges, and treatment is often difficult. No study to date has reported long-term remission of recurrent tumors for more than 5 years by treatment with carbon ion beam radiotherapy after resection of GCT of the cervical spine. PATIENT CONCERNS A 14-year-old boy who experienced recurrence after surgery for GCT of the cervical spine. DIAGNOSIS The patient presented with cervical pain, and computed tomography revealed a mass of the C2 vertebral body. He underwent surgery for tumor resection and autologous bone grafting, and the final pathological diagnosis was GCT. The transplanted bone exhibited gradual progression of resorption, and recurrent tumors were observed on computed tomography and magnetic resonance imaging 1 year and 4 months after surgery. INTERVENTIONS The patient was started on denosumab at 15 years of age and received carbon ion beam therapy with 70.4 Gy administered in 32 sessions over 7 weeks. OUTCOMES No progressive tumor growth was observed, there were no neurological symptoms such as paralysis or pain were noted, and the patient was in remission for 5 years after irradiation. CONCLUSION These findings suggest that carbon ion radiotherapy is a safe and effective therapeutic option for patients with recurrent GCT of the cervical spine.
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Affiliation(s)
- Tomohiko Sakuda
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, Japan
| | - Taisuke Furuta
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, Japan
| | - Tomoaki Okimoto
- Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, Japan
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, Japan
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22
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Tanaka M, Komatsu S, Kido M, Toyama H, Tominaga M, Uchida Y, Terashima K, Demizu Y, Okimoto T, Fukumoto T. Salvage hepatectomy for local recurrence after particle therapy using proton and carbon ion beams for liver cancer. Ann Gastroenterol Surg 2021; 5:711-719. [PMID: 34585055 PMCID: PMC8452475 DOI: 10.1002/ags3.12468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/02/2021] [Accepted: 04/14/2021] [Indexed: 12/13/2022] Open
Abstract
AIM With the increased use of particle therapy for liver cancer, local recurrence after particle therapy increased. Salvage hepatectomy is an acceptable treatment option for local recurrence following particle therapy; however, its safety and effectiveness remain unclear. Therefore, this multi-center study aimed to verify the feasibility and efficacy of salvage hepatectomy and assess clinical issues associated with its application. METHODS We retrospectively assessed the perioperative outcomes, prognosis, and pathological characteristics of 15 patients who underwent salvage hepatectomy for local recurrence after particle therapy between 2006 and 2019. RESULTS Hepatocellular carcinoma and metastatic liver tumors were noted in eight and seven patients, respectively. The mean total dose and number of fractions were 66.5 Gy and 12, respectively, and the mean interval between particle therapy and surgery was 30.1 months. Major hepatectomy was performed in seven cases. Moreover, the mortality rate was 0%, and surgical complications of Clavien-Dindo grade IIIa or higher were observed in four cases (27%)-two bile leakages, one pleural effusion, and one refractory skin fistula. The median overall survival time and 5-year overall survival rate after salvage hepatectomy were 29.9 months and 43.1%, respectively. Histological examination of the irradiated liver tissue surrounding the tumor showed sinusoidal dilatation, loss of hepatocyte, and fibrosis in most cases. CONCLUSION Salvage hepatectomy after particle therapy is a feasible therapy; however, the risk of refractory complications associated with particle therapy is relatively high. Therefore, the first-line treatment for resectable liver cancer should be carefully determined considering second-line treatment after local recurrence.
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Affiliation(s)
- Motofumi Tanaka
- Division of Hepato‐Biliary‐Pancreatic SurgeryDepartment of SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Shohei Komatsu
- Division of Hepato‐Biliary‐Pancreatic SurgeryDepartment of SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Masahiro Kido
- Division of Hepato‐Biliary‐Pancreatic SurgeryDepartment of SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Hirochika Toyama
- Division of Hepato‐Biliary‐Pancreatic SurgeryDepartment of SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Masahiro Tominaga
- Department of Gastroenterological SurgeryHyogo Cancer CenterAkashiJapan
| | - Yoichiro Uchida
- Department of Gastroenterological Surgery and OncologyThe Tazuke Kofukai Medical Research InstituteKitano HospitalOsakaJapan
| | - Kazuki Terashima
- Department of RadiologyHyogo Ion Beam Medical CenterTatsunoJapan
| | - Yusuke Demizu
- Department of RadiologyHyogo Ion Beam Medical CenterTatsunoJapan
- Department of Radiation OncologyHyogo Ion Beam Medical Center Kobe Proton CenterKobeJapan
| | - Tomoaki Okimoto
- Department of RadiologyHyogo Ion Beam Medical CenterTatsunoJapan
| | - Takumi Fukumoto
- Division of Hepato‐Biliary‐Pancreatic SurgeryDepartment of SurgeryKobe University Graduate School of MedicineKobeJapan
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23
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Masuda T, Nakaura T, Funama Y, Oda S, Okimoto T, Sato T, Noda N, Yoshiura T, Baba Y, Arao S, Hiratsuka J, Awai K. Deep learning with convolutional neural network for estimation of the characterisation of coronary plaques: Validation using IB-IVUS. Radiography (Lond) 2021; 28:61-67. [PMID: 34404578 DOI: 10.1016/j.radi.2021.07.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/08/2021] [Accepted: 07/27/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Deep learning approaches have shown high diagnostic performance in image classifications, such as differentiation of malignant tumors and calcified coronary plaque. However, it is unknown whether deep learning is useful for characterizing coronary plaques without the presence of calcification using coronary computed tomography angiography (CCTA). The purpose of this study was to compare the diagnostic performance of deep learning with a convolutional neural network (CNN) with that of radiologists in the estimation of coronary plaques. METHODS We retrospectively enrolled 178 patients (191 coronary plaques) who had undergone CCTA and integrated backscatter intravascular ultrasonography (IB-IVUS) studies. IB-IVUS diagnosed 81 fibrous and 110 fatty or fibro-fatty plaques. We manually captured vascular short-axis images of the coronary plaques as Portable Network Graphics (PNG) images (150 × 150 pixels). The display window level and width were 100 and 700 Hounsfield units (HU), respectively. The deep-learning system (CNN; GoogleNet Inception v3) was trained on 153 plaques; its performance was tested on 38 plaques. The area under the curve (AUC) obtained by receiver operating characteristic analysis of the deep learning system and by two board-certified radiologists was compared. RESULTS With the CNN, the AUC and the 95% confidence interval were 0.83 and 0.69-0.96, respectively; for radiologist 1 they were 0.61 and 0.42-0.80; for radiologist 2 they were 0.68 and 0.51-0.86, respectively. The AUC for CNN was significantly higher than for radiologists 1 (p = 0.04); for radiologist 2 it was not significantly different (p = 0.22). CONCLUSION DL-CNN performed comparably to radiologists for discrimination between fatty and fibro-fatty plaque on CCTA images. IMPLICATIONS FOR PRACTICE The diagnostic performance of the CNN and of two radiologists in the assessment of 191 ROIs on CT images of coronary plaques whose type corresponded with their IB-IVUS characterization was comparable.
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Affiliation(s)
- T Masuda
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan.
| | - T Nakaura
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto 860-8556, Japan
| | - Y Funama
- Department of Medical Physics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - S Oda
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto 860-8556, Japan
| | - T Okimoto
- Department of Cardiovascular Internal Medicine, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - T Sato
- Department of Diagnostic Radiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - N Noda
- Department of Radiological Technologist, Medical Corporation JR Hiroshima Hospital, Hiroshima, Japan
| | - T Yoshiura
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - Y Baba
- Saitama Medical University International Medical Center, 1397-1, Yamane, Hidaka-City, Saitama-Pref, 350-1298, Japan
| | - S Arao
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - J Hiratsuka
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki-city, Okayama 701-0193, Japan
| | - K Awai
- Department of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Kaneko T, Suefuji H, Koto M, Demizu Y, Saitoh JI, Tsuji H, Okimoto T, Ohno T, Shioyama Y, Nemoto K, Nakano T, Kamada T. Multicenter Study of Carbon-ion Radiotherapy for Oropharyngeal Non-squamous Cell Carcinoma. In Vivo 2021; 35:2239-2245. [PMID: 34182502 DOI: 10.21873/invivo.12496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM To evaluate treatment outcomes of carbon-ion radiotherapy for oropharyngeal non-squamous cell carcinoma at four carbon-ion facilities in Japan. PATIENTS AND METHODS We retrospectively analyzed the cases of 33 patients with oropharyngeal non-squamous cell carcinoma who were treated with carbon-ion radiotherapy between November 2003 and December 2014. RESULTS The histology included adenoid cystic carcinoma (n=25) and mucosal malignant melanoma (n=4). No patients had T1 tumors; 23 had T4 tumors. The most-commonly prescribed dose was 57.6 Gy (RBE) in 16 fractions. The median follow-up period was 34.8 months (range=4.2-122.8 months). The 3-year local control and overall survival rates were 94.7% and 90.7%, respectively. There were no grade ≥4 acute adverse events. Only one patient experienced a grade ≥4 late adverse event. No patients experienced late adverse events related to swallowing or salivary function. CONCLUSION Carbon-ion radiotherapy appears to be a promising treatment option for oropharyngeal non-squamous cell carcinoma.
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Affiliation(s)
- Takashi Kaneko
- Ion Beam Therapy Center, SAGA HIMAT Foundation, Tosu, Japan.,QST Hospital, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Hiroaki Suefuji
- Ion Beam Therapy Center, SAGA HIMAT Foundation, Tosu, Japan;
| | - Masashi Koto
- QST Hospital, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Jun-Ichi Saitoh
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Japan.,Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Hiroshi Tsuji
- QST Hospital, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Tatsuya Ohno
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | | | - Kenji Nemoto
- Department of Radiation Oncology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Takashi Nakano
- Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Tadashi Kamada
- Ion-beam Radiation Oncology Center, Kanagawa Cancer Center, Kanagawa, Japan
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Masuda T, Funama Y, Nakaura T, Sato T, Okimoto T, Masuda S, Yamashita Y, Yoshiura T, Noda N, Baba Y, Awai K. Diagnostic performance of computed tomography digital subtraction angiography of the lower extremities during haemodialysis in patients with suspected peripheral artery disease. Radiography (Lond) 2021; 27:888-896. [PMID: 33820690 DOI: 10.1016/j.radi.2021.02.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 01/22/2021] [Accepted: 02/11/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION With intra-arterial digital subtraction angiography (DSA) considered as the gold standard, we compared the diagnostic value of computed tomography angiography (CTA) and computed tomography-digital subtraction angiography (CT-DSA in hemodialysis (HD) patients suspected of having lower limb peripheral artery disease (PAD). METHODS In this retrospective study, we enrolled 220 HD patients with suspected PAD. CT-DSA images were obtained by subtracting unenhanced images from enhanced images. The research team calculated the area under the curve (AUC), sensitivity, specificity, positive and negative predictive value (PPV, NPV), and recorded the diagnostic accuracy between the CTA and CT-DSA images using the DSA as gold standard. Visual evaluation of calcifications in the peripheral arteries were also compared between CTA and CT-DSA images. RESULTS At the above-knee level, the CTA AUC [95% confidence interval (CI)] was 0.68 (CI 0.64-0.72), sensitivity and specificity were 60 and 81%, PPV and NPV were 85 and 53%, and accuracy was 67%. Below the knee, these values were 0.66 (CI 0.62-0.70), 71 and 79%, 79 and 47%, and 66%. For CT-DSA, above-knee, the AUC [95% CI] was 0.88 (CI 0.85-0.91), sensitivity and specificity were 84 and 92%, PPV and NPV were 89 and 97%, and accuracy was 93%. Below the knee, these values were 0.95 (CI 0.93-0.97), 95 and 93%, 96 and 83%, and 93%. The scores for the visualization of calcification in the peripheral arteries was significantly higher for CT-DSA than CTA (p < 0.05). CONCLUSIONS CT-DSA helps to assess stenotic PAD with high calcification in the lower extremities of HD patients. IMPLICATIONS FOR PRACTICE On CT-DSA images, the severity of vascular calcification can be assessed for HD patients suspected of PAD of the lower extremities.
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Affiliation(s)
- T Masuda
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan; Saitama Medical University International Medical Center, 1397-1, Yamane, Hidaka-City, Saitama-Pref 350-1298, Japan.
| | - Y Funama
- Department of Medical Physics, Faculty of Life Sciences, Kumamoto University, Kumamoto, 1-1-1 Honjo, Kumamoto 860-8556, Japan
| | - T Nakaura
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto 860-8556, Japan
| | - T Sato
- Department of Diagnostic Radiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - T Okimoto
- Department of Cardiovascular Internal Medicine, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - S Masuda
- Department of Radiological Technology, Kawamura Clinic, Otemachi, Naka-ku, Hiroshima 730-0051, Japan
| | - Y Yamashita
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - T Yoshiura
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - N Noda
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - Y Baba
- Saitama Medical University International Medical Center, 1397-1, Yamane, Hidaka-City, Saitama-Pref 350-1298, Japan
| | - K Awai
- Department of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Kasumi 1-2-3 Minami-ku, Hiroshima 734-8551, Japan
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Takami M, Hara T, Okimoto T, Suga M, Fukuzawa K, Kiuchi K, Suehiro H, Akita T, Takemoto M, Nakamura T, Sakai J, Yatomi A, Nakasone K, Sonoda Y, Yamamoto K, Takahara H, Hirata K. Electrophysiological and Pathological Impact of Medium-Dose External Carbon Ion and Proton Beam Radiation on the Left Ventricle in an Animal Model. J Am Heart Assoc 2021; 10:e019687. [PMID: 33759547 PMCID: PMC8174335 DOI: 10.1161/jaha.120.019687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 02/18/2021] [Indexed: 01/12/2023]
Abstract
Background Medium-dose (25 gray) x-ray radiation therapy has recently been performed on patients with refractory ventricular tachyarrhythmias. Unlike x-ray, carbon ion and proton beam radiation can deliver most of their energy to the target tissues. This study investigated the electrophysiological and pathological changes caused by medium-dose carbon ion and proton beam radiation in the left ventricle (LV). Methods and Results External beam radiation in the whole LV was performed in 32 rabbits. A total of 9 rabbits were not irradiated (control). At the 3-month or 6-month follow-up, the animals underwent an open-chest electrophysiological study and were euthanized for histological analyses. No acute death occurred. Significant LV dysfunction was not seen. The surface ECG revealed a significant reduction in the P and QRS wave voltages in the radiation groups. The electrophysiological study showed that the local conduction times in each LV site were significantly longer and that the local LV bipolar voltages were significantly lower in the radiation groups than in the control rabbits. Histologically, apoptosis, fibrotic changes, and a decrease in the expression of the connexin 43 protein were seen in the LV myocardium. These changes were obvious at 3 months, and the effects were sustained 6 months after radiation. No histological changes were seen in the coronary artery and esophagus, but partial radiation pneumonitis was observed. Conclusions Medium-dose carbon ion and proton beam radiation in the whole LV resulted in a significant electrophysiological disturbance and pathological changes in the myocardium. Radiation of the arrhythmogenic substrate would modify the electrical status and potentially induce the antiarrhythmic effect.
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Affiliation(s)
- Mitsuru Takami
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Tetsuya Hara
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Tomoaki Okimoto
- Department of RadiologyHyogo Ion Beam Medical CenterTatsunoHyogoJapan
| | - Masaki Suga
- Department of Radiation PhysicsHyogo Ion Beam Medical CenterTatsunoHyogoJapan
| | - Koji Fukuzawa
- Section of ArrhythmiaDivision of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Kunihiko Kiuchi
- Section of ArrhythmiaDivision of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Hideya Suehiro
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Tomomi Akita
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Makoto Takemoto
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Toshihiro Nakamura
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Jun Sakai
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Atsusuke Yatomi
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Kazutaka Nakasone
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Yusuke Sonoda
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Kyoko Yamamoto
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Hiroyuki Takahara
- Division of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
| | - Ken‐ichi Hirata
- Section of ArrhythmiaDivision of Cardiovascular MedicineDepartment of Internal MedicineKobe University Graduate School of MedicineKobeHyogoJapan
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Aibe N, Ogino H, Teramukai S, Yamazaki H, Iwata H, Matsuo Y, Okimoto T, Murakami M, Suzuki M, Arimura T, Ogino T, Murayama S, Harada H, Nakamura M, Akimoto T, Sakurai H. Multi-Institutional Retrospective Analysis of the Outcomes of Proton Beam Therapy for Patients With 1 to 3 Pulmonary Oligometastases From Various Primary Cancers. Adv Radiat Oncol 2021; 6:100690. [PMID: 34159280 PMCID: PMC8193372 DOI: 10.1016/j.adro.2021.100690] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 02/20/2021] [Accepted: 02/24/2021] [Indexed: 11/10/2022] Open
Abstract
Purpose Our purpose was to evaluate the efficacy of proton beam therapy (PBT) in patients with 1 to 3 pulmonary oligometastases from various primary cancers in Japan. Methods and Materials This multi-institutional retrospective survey included 118 patients with 141 metastatic lung tumors from miscellaneous primary cancers, across 6 Japanese institutions, and involved the analyses of local progression-free rate (LPF), distant progression-free rate, progression-free survival rate, cause-specific survival rate, and overall survival rate (OS). Treatment-induced adverse effects of grade ≥2 were evaluated according to the Common Terminology Criteria for Adverse Events (version 4.0). Cox proportional hazards regression models were used in univariable analysis and multivariable analysis (MVA) for the identification of the prognostic factors of LPF and OS. Results The median follow-up duration from the time of PBT was 25.5 months. The major primary disease sites included colorectal cancer (42.4%), lung cancer (11.9%), head and neck cancer (8.5%), and kidney cancer (8.5%). For years 1, 2, and 3, LPFs were 92.2%, 86.3%, and 78.4%; distant progression-free rates were 59.1%, 44.1%, and 34.0%; progression-free survival rates were 49.6%, 31.7%, and 24.2%; cause-specific survival rates were 83.4%, 72.5%, and 64.8%; and OS rates were 79.0%, 67.8%, and 59.6%, respectively. Eight patients developed acute adverse effects (grade ≥2). Ten patients developed radiation pneumonitis (grade 2) as a late adverse effect. None of the patients developed severe late toxicity (grade ≥3). Colorectal cancer as the primary disease was the only prognostic factor associated with LPF that remained independently significant in the MVAs performed using 3 sets of parameters (hazard ratio [HR], 3.31-4.76 in 3 MVA sets). In the MVA, the significant prognostic factors for OS were performance status (HR, 2.78; 95% confidence interval, 1.01-7.67) and total tumor volume (HR, 1.01; 95% confidence interval, 1.00-1.02). Conclusions PBT provides promising outcomes for pulmonary oligometastasis with acceptable toxicities.
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Affiliation(s)
- Norihiro Aibe
- Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroyuki Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, Japan
| | - Satoshi Teramukai
- Department of Biostatistics, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hideya Yamazaki
- Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiromitsu Iwata
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo, Japan
| | - Masao Murakami
- Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Fukushima, Japan
| | - Motohisa Suzuki
- Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Fukushima, Japan
| | - Takeshi Arimura
- Medipolis Proton Therapy and Research Center, Ibusuki, Japan
| | - Takashi Ogino
- Medipolis Proton Therapy and Research Center, Ibusuki, Japan
| | | | - Hideyuki Harada
- Division of Radiation Therapy, Shizuoka Cancer Center, Shizuoka, Japan
| | - Masaki Nakamura
- Division of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tetsuo Akimoto
- Division of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, University of Tsukuba, Ibaraki, Japan
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Masuda T, Funama Y, Nakaura T, Sato T, Muraoka Y, Okimoto T, Yamashita Y, Oku T, Matsumoto Y, Masuda S, Kiguchi M, Awai K. The combined application of the contrast-to-noise index and 80 kVp for cardiac CTA scanning before atrial fibrillation ablation reduces radiation dose exposure. Radiography (Lond) 2021; 27:840-846. [PMID: 33549491 DOI: 10.1016/j.radi.2021.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 12/26/2020] [Accepted: 01/13/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION To compare the radiation dose, diagnostic accuracy, and the resultant ablation procedures using 80 and 120-kVp cardiac computed tomography angiography (CCTA) protocols with the same contrast-to-noise ratio in patients scheduled for atrial fibrillation (AF) ablation. METHODS This retrospective study was performed following institutional review board approval. We divided 140 consecutive patients who had undergone CCTA using a 64-MDCT scanner into two equal groups. Standard deviation (SD) of the CT number was set at 25 Hounsfield units (HU) for the 120-kVp protocol. To facilitate a reduction in radiation dose it was set at 40 HU for the 80 kVp protocol. We compared the two protocols with respect to the radiation dose, the diagnostic accuracy for detecting left atrial appendage (LAA) thrombi, matching for surface registration, and the resultant ablation procedures. RESULTS At 120 kVp, the dose length product (DLP) was 2.2 times that at 80 kVp (1269.0 vs 559.0 mGy cm, p < 0.01). The diagnostic accuracy for thrombus detection was 100% using both protocols. There was no difference between the two protocols with respect to matching for surface registration. The protocols did not differ with respect to the subsequent time required for the ablation procedures and the ablation fluoroscopy time, and the radiation dose (p = 0.54, 0.33, and 0.32, respectively). CONCLUSION For the same CNR, the DLP at 80 kVp (559.0 mGy cm) was 56% of that delivered at 120 kVp (1269.0 mGy cm). There was no reduction in diagnostic accuracy. IMPLICATIONS FOR PRACTICE Maintaining CNR allows for a reduction in the radiation dose without reducing the image quality.
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Affiliation(s)
- T Masuda
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan; Department of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
| | - Y Funama
- Department of Medical Physics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - T Nakaura
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan
| | - T Sato
- Department of Diagnostic Radiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - Y Muraoka
- Department of Cardiovascular Internal Medicine, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - T Okimoto
- Department of Cardiovascular Internal Medicine, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan
| | - Y Yamashita
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan
| | - T Oku
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan
| | - Y Matsumoto
- Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan
| | - S Masuda
- Department of Radiological Technology, Kawamura Clinic, Otemachi, Naka-ku, Hiroshima, 730-0051, Japan
| | - M Kiguchi
- Department of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - K Awai
- Department of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Lee D, Komatsu S, Terashima K, Toyama H, Matsuo Y, Takahashi D, Suga M, Nishimura N, Tai K, Kido M, Demizu Y, Tokumaru S, Okimoto T, Sasaki R, Fukumoto T. Surgical spacer placement for proton radiotherapy in locally advanced pancreatic body and tail cancers: initial clinical results. Radiat Oncol 2021; 16:3. [PMID: 33407648 PMCID: PMC7788736 DOI: 10.1186/s13014-020-01731-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 12/17/2020] [Indexed: 11/16/2022] Open
Abstract
Background Particle radiotherapy has increasingly gained acceptance for locally advanced pancreatic cancers owing to superior tumor conformity and dosimetry compared to conventional photon radiotherapy. However, the close proximity of the pancreas to the stomach and duodenum leads to radiation-induced gastrointestinal toxicities, which hinder the delivery of curative doses to the tumor. To overcome this problem, a surgical spacer was placed between the tumor and gastrointestinal tract, and subsequent proton radiotherapy was performed in this study. Methods Data from 9 patients who underwent surgical spacer placement and subsequent proton radiotherapy were analyzed. The safety and feasibility of the spacer placement surgery were evaluated; the impact of the spacer on dosimetry was also assessed using dose volume histogram (DVH) analyses, before and after surgical spacer placement. Results Surgical spacer placement and subsequent proton radiotherapy were successfully completed in all cases. Surgical spacer placement significantly improved the dose intensity covering 95%, mean, and minimum doses for the gross tumor volume, and the clinical and planning target volume based on the DVH, while respecting the dose constraints of the gastrointestinal tract. Based on the Common Terminology Criteria for Adverse Events, two patients (22.2%) developed gastrointestinal ulcer (Grade 2) at 1 and 35 months, and one patient (11.1%) developed gastric perforation (Grade 4) at 4 months after proton radiotherapy. Conclusions Surgical spacer placement in the locally advanced pancreatic body and tail cancers is relatively safe and technically feasible. Comparing radiation plans, surgical spacer placement seems to improve the dose distribution in the locally advanced pancreatic body and tail cancers, which are close to the gastrointestinal tract.
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Affiliation(s)
- Dongha Lee
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shohei Komatsu
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Hirochika Toyama
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Daiki Takahashi
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Naoko Nishimura
- Department of Radiation Technology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Kentaro Tai
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Masahiro Kido
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan.,Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, 1-6-8, Minatojimaminami-machi, chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, Tatsuno, Hyogo, 679-5165, Japan
| | - Ryohei Sasaki
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Takumi Fukumoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
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Takagi M, Demizu Y, Fujii O, Terashima K, Niwa Y, Daimon T, Tokumaru S, Fuwa N, Hareyama M, Okimoto T. Proton Therapy for Localized Prostate Cancer: Long-Term Results From a Single-Center Experience. Int J Radiat Oncol Biol Phys 2020; 109:964-974. [PMID: 33186616 DOI: 10.1016/j.ijrobp.2020.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/22/2020] [Accepted: 11/02/2020] [Indexed: 12/21/2022]
Abstract
PURPOSE Although proton therapy is controversial, it has been used to treat localized prostate cancer over the past 2 decades. The purpose of this study is to examine the long-term efficacy and toxicity of proton therapy for localized prostate cancer. METHODS AND MATERIALS This was a retrospective observational study of 2021 patients from 2003 to 2014 at a single institution. Patients were classified using the risk groups defined by the National Comprehensive Cancer Network guidelines, version 4.2019. Ninety-eight percent of the patients received 74 Gy (relative biological effectiveness) in 37 fractions. Fifty-one and 6% of the patients received neoadjuvant and adjuvant androgen deprivation therapy, respectively. The outcomes were the time of freedom from biochemical relapse and the time to late toxicity by the National Cancer Institute Common Terminology Criteria for Adverse Events, version 4.0. The outcomes were estimated using the Kaplan-Meier method and were analyzed using multivariable Cox proportional hazards models. RESULTS The median follow-up period was 84 months (interquartile range, 60-110). The 5- and 10-year freedom from biochemical relapse rates were 100% and 100%, 99% and 88%, 93% and 86%, 90% and 79%, 88% and 68%, and 76% and 63% for the very low, low, favorable intermediate, unfavorable intermediate, high, and very high-risk groups, respectively. Patients with higher risk experienced biochemical relapse after shorter periods. The 5-year rates of grade 2 or higher late genitourinary and gastrointestinal toxicity were 2.2% and 4.0%, respectively. The results of multivariable analyses indicate that younger patients more often experienced biochemical relapse. CONCLUSIONS This study demonstrates the favorable biochemical controls of proton therapy even in advanced localized prostate cancer patients with a low incidence of late toxicities, supporting the feasibility of conducting prospective clinical trials. The risk groups defined by the National Comprehensive Cancer Network guidelines, version 4.2019, are useful to classify patients with localized prostate cancer. Our findings might suggest the necessity to develop a treatment strategy that accounts for the patient's age.
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Affiliation(s)
- Masaru Takagi
- Proton Therapy Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan; Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan.
| | - Yusuke Demizu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan; Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Osamu Fujii
- Department of Radiation Oncology, Hakodate Goryoukaku Hospital, Hakodate, Hokkaido, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Yasue Niwa
- Department of Radiation Oncology, Tsuyama Chuo Hospital, Tsuyama, Okayama, Japan
| | - Takashi Daimon
- Department of Biostatistics, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Nobukazu Fuwa
- Department of Radiation Oncology, Ise Red Cross Hospital, Ise, Mie, Japan
| | - Masato Hareyama
- Proton Therapy Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
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Tokumaru S, Ohnishi K, Harada H, Wada H, Nakamura N, Arimura T, Iwata H, Sato Y, Tamamura H, Ogino H, Ogino T, Akimoto T, Okimoto T, Kikuchi Y, Murayama S, Sakurai H. Clinical Outcomes of Proton Beam Therapy for Stage I Lung Cancer in Patients with Interstitial Pneumonia: A Multi-Institutional Retrospective Study in Japan. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Demizu Y, Imai R, Kiyohara H, Matsunobu A, Okamoto M, Okimoto T, Tsuji H, Ohno T, Shioyama Y, Nemoto K, Nakano T, Kamada T. Carbon ion radiotherapy for sacral chordoma: A retrospective nationwide multicentre study in Japan. Radiother Oncol 2020; 154:1-5. [PMID: 32941958 DOI: 10.1016/j.radonc.2020.09.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 08/16/2020] [Accepted: 09/09/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND PURPOSE Usefulness of carbon ion radiotherapy (CIRT) for sacral chordoma has been reported from single institutions. We conducted a retrospective nationwide multicentre study to evaluate the clinical outcomes of CIRT for sacral chordoma in Japan. MATERIALS AND METHODS A total of 219 patients who underwent CIRT for sacral chordoma at institutions across Japan between December 2003 and July 2014 were included in this study. RESULTS Median patient age was 67 years (range, 26-87 years). Most patients had no history of surgical resection (96%). The most frequent planning target volume (PTV) range was 100-500 mL (65%). The most frequently used dose-fractionation was 67.2 Gy (relative biological effectiveness) in 16 fractions (65%). The median follow-up was 56 months (range, 7-132 months). The 5-year overall survival (OS), progression-free survival, and local control rates were 84%, 48%, and 72%, respectively. Frequent sites of out-of-field recurrence included bone (9%) and lung (9%) metastases. The Cox proportional hazards model revealed that both younger age (P = 0.004) and smaller PTV (P = 0.001) were associated with significantly better OS. Acute toxicities of ≥Grade 3 occurred in eight patients (4%). Late toxicities of ≥Grade 3 occurred in 13 patients (6%): skin disorders in six patients (3%), pain in three (1%), myositis in three (1%), etc. CONCLUSION: Our retrospective nationwide multicentre study showed that CIRT for sacral chordoma was effective and safe, and replicated the previously reported data from a representative CIRT institution in Japan demonstrating high local control and low toxicity rates.
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Affiliation(s)
- Yusuke Demizu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Japan; Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Reiko Imai
- QST Hospital, Quantum Medical Science Directorate, National Institute for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Hiroki Kiyohara
- Department of Radiation Oncology, Japanese Red Cross Maebashi Hospital, Maebashi, Japan
| | | | | | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Hiroshi Tsuji
- QST Hospital, Quantum Medical Science Directorate, National Institute for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Tatsuya Ohno
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | | | - Kenji Nemoto
- Department of Radiation Oncology, Yamagata University, Faculty of Medicine, Yamagata, Japan
| | - Takashi Nakano
- National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institute for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Tadashi Kamada
- Ion-beam Radiation Oncology Center, Kanagawa Cancer Center, Yokohama, Japan.
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Takahashi D, Demizu Y, Park SC, Matsuo Y, Sulaiman NS, Terashima K, Tokumaru S, Akashi M, Okimoto T. Phase I dose-escalation trial of S-1 combined with carbon-ion radiotherapy for sinonasal squamous cell carcinoma. J Radiat Res 2020; 61:733-739. [PMID: 32642753 PMCID: PMC7482161 DOI: 10.1093/jrr/rraa037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/19/2020] [Indexed: 06/11/2023]
Abstract
This study aimed to determine the maximum tolerance dose (MTD) and to estimate the recommended dose (RD) of concomitant S-1 with carbon-ion radiotherapy (RT) for sinonasal squamous cell carcinoma (SCC). Nine patients with sinonasal SCC received carbon-ion RT with escalating doses of S-1 according to phase I methods. Doses of 40, 60 and 80 mg/m2/day were administered twice daily in dose levels 1, 2 and 3, respectively, from days 1 to 14 and 22 to 35. Carbon-ion RT was administered at a dose of 70.4 Gy (relative biological effectiveness) in 32 fractions, 5 days a week. Two patients developed grade 3 acute dermatitis. However, none developed dose-limiting toxicities. Therefore, the MTD of S-1 could not be determined; the RD was estimated to be 80 mg/m2/day with concurrent carbon-ion RT. Partial response and stable disease were noted in 5 and 4 patients, respectively. The 2-year overall survival and local control rates were 56 and 74%, respectively. Overall, 2 patients developed ≥grade 3 late toxicities; among them, 1 patient developed grade 3 cataract and the other developed grade 4 cataract, optic nerve disorder and hearing impairment. To the best of our knowledge, this phase I study is the first clinical trial to evaluate concomitant S-1 with carbon-ion RT for sinonasal SCC. The MTD of S-1 could not be determined, and the RD was estimated to be 80 mg/m2/day. This study demonstrated a manageable safety profile for this combination. The observed outcomes may facilitate further evaluation of this novel therapy.
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Affiliation(s)
- Daiki Takahashi
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, 1-6-8 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Sung Chul Park
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Nor Shazrina Sulaiman
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, Japan, 650-0017
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Koto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan
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Fukumitsu N, Ishikawa H, Arimura T, Wada H, Okimoto T, Sato Y, Iwata H, Shimizu S, Sakurai H. Proton Therapy for Primary Renal Cell Carcinoma: The First Nationwide Retrospective Study in Japan. In Vivo 2020; 34:2883-2889. [PMID: 32871828 DOI: 10.21873/invivo.12116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/27/2020] [Accepted: 06/29/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND/AIM This multi-institutional study aimed to investigate the efficacy and feasibility of proton beam therapy (PBT) for renal cell carcinoma (RCC) in Japan. PATIENTS AND METHODS The survival, local control, and toxicities in 22 RCC patients treated between 2001 and 2016 at 6 Japanese PBT institutes were analyzed. RESULTS The 22 patients comprised 20 men and had a median age of 67 (range=42-88) years. The total irradiation dose was 60-79.6 Gy (relative biological effectiveness). Over a median follow-up of 37 months, the 3-year overall and disease-specific survival rates were 95% and 100%, respectively, and no recurrence occurred. No patient experienced grade 3 or higher adverse events. The serum blood urea nitrogen (p=0.25) and creatinine levels (p=0.95) were not significantly affected, although the mean estimated glomerular filtration rate was reduced by 7.1±11.2 ml/min/1.73 m2 Conclusion: Despite the small number of patients, high-dose PBT can control RCC while maintaining their renal function with high probability, and could be and alternative curative therapy especially for inoperable patients.
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Affiliation(s)
| | - Hitoshi Ishikawa
- Department of Radiation Oncology, University of Tsukuba, Faculty of Medicine, Ibaraki, Japan .,National Institutes for Quantum and Radiological Science and Technology, QST Hospital, Chiba, Japan
| | - Takeshi Arimura
- Medipolis Proton Therapy and Research Center, Kagoshima, Japan
| | - Hitoshi Wada
- Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Fukushima, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo, Japan
| | - Yoshitaka Sato
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Hiromitsu Iwata
- Departments of Radiation Oncology, Nagoya City West Medical Center, Aichi, Japan
| | - Shosei Shimizu
- Department of Radiation Oncology, University of Tsukuba, Faculty of Medicine, Ibaraki, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, University of Tsukuba, Faculty of Medicine, Ibaraki, Japan
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Komatsu S, Demizu Y, Sulaiman NS, Terashima K, Suga M, Kido M, Toyama H, Tokumaru S, Okimoto T, Sasaki R, Fukumoto T. Space-making particle therapy for sarcomas derived from the abdominopelvic region. Radiother Oncol 2020; 146:194-199. [PMID: 32220700 DOI: 10.1016/j.radonc.2020.02.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 02/10/2020] [Accepted: 02/26/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND The primary definitive treatment for abdominopelvic sarcomas (APSs) is resection, although incomplete resection has a negative prognostic impact. Although the effectiveness of particle therapy (PT) as a treatment for APS has already been demonstrated, its application for tumors adjacent to the gastrointestinal tract is frequently restricted, due to extremely low tolerance. Space-making PT, consisting of surgical spacer placement and subsequent PT, has been developed to overcome this limitation. MATERIALS AND METHODS Between June 2006 and June 2018, a total of 75 patients with 12 types of APS underwent space-making PT. RESULTS The 3-year local control rate of all patients was 90.3%. Fourteen surgery-related complications were observed in 12 patients (16%), and complications of Grade 3b or higher were observed in 3 patients. Ninety-five PT-related complications were seen in 66 patients (88.0%), and 13 patients (17.3%) had complications of Grade 3 or higher. The median V95% (volume irradiated with 95% of the treatment planning dose) of the gross tumor volume and clinical target volume were 99.9% and 99.5%, respectively. The median D95% (dose intensity covering 95% of the target volume) of the gross tumor volume/planned dose and clinical target volume/planned dose were 99.4%, and 99.1%, respectively. CONCLUSION The feasibility and effectiveness of space-making PT have been demonstrated via dosimetric evaluation, and our results indicate that this new strategy may potentially provide an effective and innovative treatment option for advanced APS.
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Affiliation(s)
- Shohei Komatsu
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Japan.
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan; Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Japan
| | | | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Masahiro Kido
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Japan
| | - Hirochika Toyama
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Ryohei Sasaki
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Japan
| | - Takumi Fukumoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Japan
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Tsugawa D, Komatsu S, Demizu Y, Sulaiman NS, Suga M, Kido M, Toyama H, Okimoto T, Sasaki R, Fukumoto T. Space-Making Particle Therapy with Surgical Spacer Placement in Patients with Sacral Chordoma. J Am Coll Surg 2019; 230:207-215. [PMID: 31765694 DOI: 10.1016/j.jamcollsurg.2019.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/15/2019] [Accepted: 11/04/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Sacral chordomas are rare malignant bone tumors and are often very large for complete resection. Particle therapy for these tumors, which are adjacent to the gastrointestinal tract, is restricted because the tolerance dose of the intestine is low. This study aimed to demonstrate the technical aspects and treatment results of space-making particle therapy with surgical spacer placement for sacral chordoma. We aimed to investigate the dosimetric change in the particle therapy before and after spacer placement and the safety, efficacy, and long-term outcomes of space-making particle therapy. STUDY DESIGN Twenty-one patients with sacral chordomas who were excluded from typical particle therapy were enrolled between 2007 and 2015. Gore-Tex sheets (WL Gore & Assoc) were folded and placed between the sacral and rectum. Particle therapy with 70.4 Gy (relative biologic effectiveness) was then performed. RESULTS The mean volume that allows 95% of the treatment plan dose of the gross tumor volume and clinical tumor volume after spacer placement was improved to 97.7% and 96.4% from preoperative values of 91.0% and 89.5%, respectively. The recurrence rate within the gross tumor volume was only 4.8%. The 4-year local progression-free survival rate was 68.4%. The 5-year overall survival rate was 100% and the adverse events were acceptable. CONCLUSIONS Considering improvements in the dose-volume histogram after spacer placement, low recurrence rates within the gross tumor volume, good survival rates, and low incidences of side effects, treatment of sacral chordoma with space-making particle therapy shows promise.
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Affiliation(s)
- Daisuke Tsugawa
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Shohei Komatsu
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yusuke Demizu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center, Hyoga, Japan; Department of Radiology, Hyogo Ion Beam Medical Center, Hyoga, Japan
| | | | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Hyoga, Japan
| | - Masahiro Kido
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hirochika Toyama
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Hyoga, Japan
| | - Ryohei Sasaki
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Fukumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Ohnishi K, Nakamura N, Harada H, Tokumaru S, Wada H, Arimura T, Iwata H, Sato Y, Sekino Y, Tamamura H, Mizoe JE, Ogino T, Ishikawa H, Kikuchi Y, Okimoto T, Murayama S, Akimoto T, Sakurai H. Proton Beam Therapy for Histologically or Clinically Diagnosed Stage I Non-Small Cell Lung Cancer (NSCLC): The First Nationwide Retrospective Study in Japan. Int J Radiat Oncol Biol Phys 2019; 106:82-89. [PMID: 31580927 DOI: 10.1016/j.ijrobp.2019.09.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/23/2019] [Accepted: 09/10/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE To investigate the efficacy and safety of proton beam therapy (PBT) for the treatment of stage I non-small cell lung cancer (NSCLC). METHODS AND MATERIALS Six hundred sixty-nine patients with 682 tumors histologically or clinically diagnosed stage I NSCLC according to the seventh edition of Union for International Cancer Control who received passive-scattering PBT from April 2004 and December 2013 in Japan were retrospectively reviewed to analyze survival, local control, and toxicities. RESULTS Of 669 patients, 486 (72.6%) were men, with a median age of 76 years (range, 42-94 years). NSCLC was histologically confirmed in 440 patients (65.7%). Clinical T stages included T1a (n = 265; 38.9%), T1b (n = 216; 31.7%), and T2a (n = 201; 29.4%). The total irradiation doses of PBT ranged from 74.4 to 131.3 biological effective dose GyE (median, 109.6 biological effective dose GyE). The median follow-up period was 38.2 months (range, 0.6-154.5 months) for all patients. The 3-year overall survival and progression-free survival rates for all patients were 79.5% and 64.1%, respectively. For patients with stage IA tumors, the 3-year overall survival and progression-free survival rates were 82.8% and 70.6%, respectively, and the corresponding rates for patients with stage IB tumors were 70.8% and 47.3%, respectively. The 3-year local progression-free rates for all, stage IA, and stage IB patients were 89.8%, 93.5%, and 79.4%, respectively. The incidence of grade 2, 3, 4, and 5 pneumonitis was 9.8%, 1.0%, 0%, and 0.7%, respectively. The incidence of grade ≥3 dermatitis was 0.4%. No grade 4 or severe adverse events, other than pneumonitis, were observed. CONCLUSIONS PBT appears to yield acceptable survival rates, with a low rate of toxicities.
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Affiliation(s)
- Kayoko Ohnishi
- Department of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Naoki Nakamura
- Division of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Hideyuki Harada
- Proton Therapy Division, Shizuoka Cancer Center, Nagaizumi, Shizuoka, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Hitoshi Wada
- Department of Radiation Oncology, Southern TOHOKU Proton Therapy Center, Koriyama, Fukushima, Japan
| | - Takeshi Arimura
- Medipolis Proton Therapy and Research Center, Ibusuki, Kagoshima, Japan
| | - Hiromitsu Iwata
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - Yoshitaka Sato
- Proton Therapy Center, Fukui Prefecture Hospital, Fukui, Fukui, Japan
| | - Yuta Sekino
- Department of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hiroyasu Tamamura
- Proton Therapy Center, Fukui Prefecture Hospital, Fukui, Fukui, Japan
| | - Jun-Etsu Mizoe
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - Takashi Ogino
- Medipolis Proton Therapy and Research Center, Ibusuki, Kagoshima, Japan
| | - Hitoshi Ishikawa
- Department of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yasuhito Kikuchi
- Department of Radiation Oncology, Southern TOHOKU Proton Therapy Center, Koriyama, Fukushima, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Shigeyuki Murayama
- Proton Therapy Division, Shizuoka Cancer Center, Nagaizumi, Shizuoka, Japan
| | - Tetsuo Akimoto
- Division of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Hideyuki Sakurai
- Department of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.
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Sasaki R, Demizu Y, Yamashita T, Komatsu S, Akasaka H, Miyawaki D, Yoshida K, Wang T, Okimoto T, Fukumoto T. First-in-Human Phase I Study of a Non-Woven Fabric Bioabsorbable Spacer Combined with Particle Therapy Against Abdominal or Pelvic Sarcomas. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ikawa H, Koto M, Demizu Y, Saitoh JI, Suefuji H, Okimoto T, Ohno T, Shioyama Y, Takagi R, Hayashi K, Nemoto K, Nakano T, Kamada T. Multicenter study of carbon-ion radiation therapy for nonsquamous cell carcinomas of the oral cavity. Cancer Med 2019; 8:5482-5491. [PMID: 31369213 PMCID: PMC6745861 DOI: 10.1002/cam4.2408] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/25/2019] [Accepted: 06/25/2019] [Indexed: 12/13/2022] Open
Abstract
Background The aim of this study was to evaluate the efficacy and safety of carbon‐ion radiation therapy for nonsquamous cell carcinomas of the oral cavity in a multicenter study. Methods Retrospective analysis of the clinicopathological features and outcomes of 76 patients with oral nonsquamous cell carcinomas with N0‐1 M0 status and were treated with carbon‐ion radiation therapy at four institutions in Japan between November 2003 and December 2014 was performed. Results Salivary gland carcinoma, mucosal melanoma, and three other carcinomas were found in 46, 27, and 3 patients, respectively. T1‐3, T4a, and T4b disease was diagnosed in 27, 18, and 31 patients, respectively. Median follow‐up period was 31.1 months (range, 3‐118 months). Three‐year local control, progression‐free survival, and overall survival of all patients were 86.8%, 63.1%, and 78.4%, respectively. Multivariate analysis showed T classification (T4) to be a significant independent poor prognostic factor for local control. Acute grade 3 mucositis was observed in 38 patients. Grades 3 and 4 late morbidities were observed in 9 and 4 patients, respectively. No grade 5 late toxicity was observed. Conclusions Oral nonsquamous cell carcinomas could be treated effectively, with acceptable toxicity, by carbon‐ion radiation therapy.
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Affiliation(s)
- Hiroaki Ikawa
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Masashi Koto
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | | | | | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Tatsuya Ohno
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | | | - Ryo Takagi
- Department of Oral Pathobiological Science and Surgery, Tokyo Dental College, Tokyo, Japan
| | - Kazuhiko Hayashi
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Kenji Nemoto
- Department of Radiation Oncology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Takashi Nakano
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Tadashi Kamada
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
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Kasuya G, Terashima K, Shibuya K, Toyama S, Ebner DK, Tsuji H, Okimoto T, Ohno T, Shioyama Y, Nakano T, Kamada T. Carbon-ion radiotherapy for cholangiocarcinoma: a multi-institutional study by and the Japan carbon-ion radiation oncology study group (J-CROS). Oncotarget 2019; 10:4369-4379. [PMID: 31320991 PMCID: PMC6633891 DOI: 10.18632/oncotarget.27028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 06/05/2019] [Indexed: 12/11/2022] Open
Abstract
To evaluate the safety and efficacy of carbon-ion radiotherapy (CIRT) for cholangiocarcinoma via a multicenter retrospective study. Clinical data were collected from patients with cholangiocarcinoma who had received CIRT at one of four treating institutions in Japan. Of 56 eligible patients, none received surgery for cholangiocarcinoma before or after CIRT. The primary endpoint was overall survival (OS). Based on the tumor site, the 56 cases were categorized as intrahepatic cholangiocarcinoma (IHC) (n=27) or perihilar cholangiocarcinoma (PHC) (n=29). In all patients, the median tumor size was 37 (range, 15‒110) mm, and the most commonly prescribed dose was 76 Gy (relative biological effectiveness) in 20 fractions. The median survival was 14.8 (range, 2.1-129.2) months, and the 1- and 2-year OS rates were 69.7% and 40.9%, respectively. The median survival times of the patients with IHC and those with PHC were 23.8 and 12.6 months, respectively. Both univariate and multivariate analyses revealed that cholangitis pre-CIRT and Child‒Pugh class B were significant prognostic factors for an unfavorable OS. Of four patients who died of liver failure, one with IHC was suspected to have radiation-induced liver disease because of newly developed ascites, and died at 4.3 months post-CIRT. Grade 3 CIRT-related bile duct stenosis was observed in one IHC case. No other CIRT-related severe adverse events, including gastrointestinal events, were observed. These results suggest that CIRT yields relatively favorable treatment outcomes, especially for patients with IHC, and acceptable toxicities were observed in patients with cholangiocarcinoma who did not receive surgery.
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Affiliation(s)
- Goro Kasuya
- QST Hospital (Former Hospital of the National Institute of Radiological Sciences), National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Kei Shibuya
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Shingo Toyama
- Ion Beam Therapy Center, SAGA-HIMAT Foundation, Tosu, Japan
| | - Daniel K Ebner
- QST Hospital (Former Hospital of the National Institute of Radiological Sciences), National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.,Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Hiroshi Tsuji
- QST Hospital (Former Hospital of the National Institute of Radiological Sciences), National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Tatsuya Ohno
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | | | - Takashi Nakano
- QST Hospital (Former Hospital of the National Institute of Radiological Sciences), National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Tadashi Kamada
- QST Hospital (Former Hospital of the National Institute of Radiological Sciences), National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
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41
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Mizumoto T, Terashima K, Matsuo Y, Nagano F, Demizu Y, Mima M, Sulaiman NS, Tokumaru S, Okimoto T, Toyama H, Fukumoto T. Proton Radiotherapy for Isolated Local Recurrence of Primary Resected Pancreatic Ductal Adenocarcinoma. Ann Surg Oncol 2019; 26:2587-2594. [PMID: 31147994 DOI: 10.1245/s10434-019-07471-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND The optimal treatment for isolated local recurrence (ILR) of pancreatic adenocarcinoma (PDAC) after surgical resection remains unclear. This study aimed to evaluate the safety and efficacy of proton radiotherapy (PRT) for ILR of PDAC after surgery. METHODS The medical records of patients with ILR of PDAC after surgery who underwent proton beam therapy between 2011 and 2015 at Hyogo Ion Beam Medical Center were retrospectively studied. RESULTS The study analyzed 30 patients (14 women and 16 men) with a median age of 65 years (range 38-81 years) who had initially undergone pancreatoduodenectomy (n = 23) or distal pancreatectomy (n = 7) for their primary tumors. Upon ILR, PRT was administered with a median total cumulative dose of 67.5 gray equivalent (GyE) (range 50-67.5 GyE) using 19 to 25 fractions. For 25 patients, concurrent chemotherapy was administered using gemcitabine (n = 18) or S-1 (n = 7). Four patients (13.3%) experienced acute grade ≥ 3 gastrointestinal toxicities. After a median follow-up period of 17.6 months (range 2.1-50.4 months), 23 patients had experienced tumor progression and 10 had died. Nine patients (30%) experienced local tumor progression. The median overall, progression-free, and local progression-free survival rates were 26.1, 12.3, and 41.2 months, respectively. Pre-PRT serum levels of cancer antigen 19-9 higher than 100 U/mL and duke pancreatic monoclonal antigen type 2 higher than 150 U/mL were significantly associated with shorter progression-free survival rates. CONCLUSIONS Proton radiotherapy for ILR of PDAC after surgery is well tolerated and produces good locoregional control and should be considered for eligible patients.
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Affiliation(s)
- Takuya Mizumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.,Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Fumiko Nagano
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Masayuki Mima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | | | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Hirochika Toyama
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.
| | - Takumi Fukumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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42
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Sasaki R, Demizu Y, Yamashita T, Komatsu S, Akasaka H, Miyawaki D, Yoshida K, Wang T, Okimoto T, Fukumoto T. First-In-Human Phase 1 Study of a Nonwoven Fabric Bioabsorbable Spacer for Particle Therapy: Space-Making Particle Therapy (SMPT). Adv Radiat Oncol 2019; 4:729-737. [PMID: 31673666 PMCID: PMC6817542 DOI: 10.1016/j.adro.2019.05.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/09/2019] [Accepted: 05/02/2019] [Indexed: 11/03/2022] Open
Abstract
Purpose Surgical spacer placement (SSP) is useful in particle therapy (PT) for patients with abdominal or pelvic tumors located adjacent to normal organs. We developed a nonwoven fabric bioabsorbable spacer made of polyglycolic acid (PGA) sutures that degrades via hydrolysis. We then conducted this first-in-human phase 1 study of the combination of SSP and PT using the PGA spacer, which we termed space-making PT (SMPT). This study aimed to evaluate the safety and efficacy of SMPT in patients with unresectable malignant tumor located adjacent to normal organs. Methods and Materials The eligibility criteria included histologically proven malignant abdominal or pelvic tumor adjacent to the intestines, no metastasis, and no previous radiation therapy. Periodic computed tomography (CT) images were obtained before SSP and before, during, and after PT until the spacer disappeared. Treatment planning was performed for each CT image set until the end of PT, and doses for the planning target volume and organs at risk were analyzed. The thickness and volume of the PGA spacer were measured in each CT image set. Adverse events were evaluated according to the Common Terminology Criteria for Adverse Events version 4.0. Results Five patients were enrolled in this study. All patients received 70.4 Gy (relative biological effectiveness) of irradiation. V95% of the planning target volume before SSP, at the beginning of PT, and at the end of PT was 82.1% ± 11.3%, 98.1% ± 1.1%, and 97.1% ± 0.8%, respectively. The PGA spacers maintained enough thickness (≥1 cm) until the end of PT and disappeared within 8 months after SSP in all patients. No grade ≥3 acute adverse events were observed. Conclusions The SMPT is feasible and useful for abdominal or pelvic tumors adjacent to the intestines. This method may be applicable to unresectable tumors located adjacent to normal organs and may expand the indications of PT.
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Affiliation(s)
- Ryohei Sasaki
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Yusuke Demizu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan.,Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Tomohiro Yamashita
- Department of Radiation Physics, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Shohei Komatsu
- Department of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Hiroaki Akasaka
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Daisuke Miyawaki
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kenji Yoshida
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Tianyuan Wang
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Takumi Fukumoto
- Department of Radiation Physics, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
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43
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Komatsu S, Terashima K, Matsuo Y, Takahashi D, Suga M, Nishimura N, Lee D, Tai K, Kido M, Toyama H, Demizu Y, Tokumaru S, Okimoto T, Sasaki R, Fukumoto T. Validation of combination treatment with surgical spacer placement and subsequent particle radiotherapy for unresectable hepatocellular carcinoma. J Surg Oncol 2019; 120:214-222. [PMID: 31075183 DOI: 10.1002/jso.25495] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/12/2019] [Accepted: 04/20/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Shohei Komatsu
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Yoshiro Matsuo
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Daiki Takahashi
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Naoko Nishimura
- Department of Radiation Technology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Dongha Lee
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kentaro Tai
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Masahiro Kido
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Hirochika Toyama
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan.,Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Sunao Tokumaru
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Ryohei Sasaki
- Division of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Takumi Fukumoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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44
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Shimizu N, Tanaka Y, Demizu Y, Okimoto T, Maniwa Y. Surgery and Proton Beam Therapy for Mediastinal Extraskeletal Osteosarcoma. Ann Thorac Surg 2019; 108:e289-e291. [PMID: 31034825 DOI: 10.1016/j.athoracsur.2019.03.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/22/2019] [Accepted: 03/23/2019] [Indexed: 10/26/2022]
Abstract
Extraskeletal osteosarcoma (ESOS) arising from the mediastinum is a rare malignant tumor and associated with a poor prognosis. We present the case of a 73-year-old man with a hoarseness. Imaging studies revealed a large calcified tumor of the median mediastinum. Surgery was performed, but complete resection was impossible and approximately two thirds of the tumor was excised. The tumor was diagnosed pathologically as ESOS. Proton beam therapy has been performed on the remaining lesion, and the patient is alive without tumor regrowth after 29 months. This case report documents a mediastinum ESOS successfully treated successfully with surgery and postoperative proton therapy.
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Affiliation(s)
- Nahoko Shimizu
- Division of Thoracic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yugo Tanaka
- Division of Thoracic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Yusuke Demizu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Japan; Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Yoshimasa Maniwa
- Division of Thoracic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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45
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Okonogi N, Kaminuma T, Okimoto T, Shinoto M, Yamamoto N, Yamada S, Murata K, Ohno T, Shioyama Y, Tsuji H, Nakano T, Kamada T. Carbon-ion radiotherapy for lymph node oligo-recurrence: a multi-institutional study by the Japan Carbon-Ion Radiation Oncology Study Group (J-CROS). Int J Clin Oncol 2019; 24:1143-1150. [PMID: 30968270 PMCID: PMC6687700 DOI: 10.1007/s10147-019-01440-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 04/02/2019] [Indexed: 01/09/2023]
Abstract
Background The efficacy of carbon-ion radiotherapy (C-ion RT) for lymph node (LN) oligo-recurrence has only been evaluated in limited single-center studies. We aimed to investigate the benefit of C-ion RT for LN oligo-recurrence in a large multi-center study. Methods Patients who received C-ion RT between December 1996 and December 2015 at 4 participating facilities and who met the following eligibility criteria were included: (i) histological or clinical diagnosis of LN recurrence; (ii) controlled primary lesion; (iii) no recurrence other than LN; (iv) LN recurrence involved in a single lymphatic site; and (v) age ≥ 20 years. Results A total of 323 patients were enrolled. Median follow-up period was 34 months for surviving patients. The most common dose fractionation of C-ion RT was 48.0 Gy (relative biological effectiveness) in 12 fractions. Forty-seven patients had a history of RT at the recurrent site. The 2-year local control (LC) and overall survival (OS) rates after C-ion RT were 85% and 63%, respectively. Only 1 patient developed grade-3 toxicity. Factors such as LN diameter, histology, and history of previous RT did not correlate with LC. Smaller diameters (< 30 mm) and numbers (≤ 3) of LN metastases as well as longer disease-free intervals post-primary therapy (≥ 16 months) were associated with significantly better OS. Conclusions C-ion RT for LN oligo-recurrence appeared to be effective and safe. C-ion RT may provide a survival benefit to patients with LN oligo-recurrence, particularly to those with few LN metastases, smaller LN diameters, and longer disease-free intervals. Electronic supplementary material The online version of this article (10.1007/s10147-019-01440-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Noriyuki Okonogi
- QST Hospital, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Takuya Kaminuma
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Makoto Shinoto
- Ion Beam Therapy Center, SAGA HIMAT Foundation, Saga, Japan
| | - Naoyoshi Yamamoto
- QST Hospital, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Shigeru Yamada
- QST Hospital, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Kazutoshi Murata
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Tatsuya Ohno
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | | | - Hiroshi Tsuji
- QST Hospital, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Takashi Nakano
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Tadashi Kamada
- QST Hospital, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan.
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Ukon Y, Outani H, Nagata S, Konishi E, Imai R, Demizu Y, Okimoto T, Naka N, Araki N. Rectotumoral fistula formation occurring more than 5 years after carbon ion radiotherapy for sacral chordoma: A case report. Mol Clin Oncol 2019; 10:487-491. [PMID: 30967943 PMCID: PMC6449880 DOI: 10.3892/mco.2019.1821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/27/2019] [Indexed: 11/06/2022] Open
Abstract
Chordoma is a rare tumor that originates from the notochord. Half of chordomas involve the sacral region. Surgery is considered to be the standard treatment for sacral chordoma. However, carbon ion radiotherapy (CIRT) has recently emerged as a promising treatment for unresectable sacral chordoma. Little is known about the long-term complications of CIRT. We present two cases of rectotumoral fistula formation that occurred >5 years after CIRT for sacral chordoma. We considered two possible explanations for fistula formation: radiation enterocolitis after CIRT might cause formation of the fistula long-term, and tumor regrowth might compress the rectum and cause fistula formation. A biopsy in Case 1 showed that regrowth tumor was post-CIRT. It is important to be aware of the possibility of rectal complications after CIRT, and if found, resection of the rectum should be considered. This is a first report of rectotumoral fistula formation that occurred >5 years after CIRT for sacral chordoma.
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Affiliation(s)
- Yuichiro Ukon
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan.,Musculoskeletal Oncology Service, Osaka International Cancer Institute, Osaka, Osaka 541-8567, Japan
| | - Hidetatsu Outani
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan.,Musculoskeletal Oncology Service, Osaka International Cancer Institute, Osaka, Osaka 541-8567, Japan
| | - Shigenori Nagata
- Department of Diagnostic Pathology and Cytology, Osaka International Cancer Institute, Osaka, Osaka 541-8567, Japan
| | - Eiichi Konishi
- Department of Surgical Pathology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Reiko Imai
- Research Center Hospital for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba, Chiba 263-8555, Japan
| | - Yusuke Demizu
- Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo 650-0047, Japan.,Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo 679-5165, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo 679-5165, Japan
| | - Norifumi Naka
- Musculoskeletal Oncology Service, Osaka International Cancer Institute, Osaka, Osaka 541-8567, Japan
| | - Nobuhito Araki
- Musculoskeletal Oncology Service, Osaka International Cancer Institute, Osaka, Osaka 541-8567, Japan.,Department of Orthopaedic Surgery, Ashiya Municipal Hospital, Ashiya, Hyogo 659-8502, Japan
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47
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Hayashi K, Koto M, Demizu Y, Saitoh JI, Suefuji H, Okimoto T, Ohno T, Shioyama Y, Takagi R, Ikawa H, Nemoto K, Nakano T, Kamada T. A retrospective multicenter study of carbon-ion radiotherapy for external auditory canal and middle ear carcinomas. Cancer Med 2018; 8:51-57. [PMID: 30548207 PMCID: PMC6346229 DOI: 10.1002/cam4.1830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/14/2018] [Accepted: 09/18/2018] [Indexed: 12/14/2022] Open
Abstract
Background We conducted a retrospective multicenter study to assess the clinical outcomes of carbon‐ion radiotherapy (CIRT) for head and neck malignancies (Japan Carbon‐Ion Radiation Oncology Study Group [J‐CROS] study: 1402 HN). We aimed to evaluate the safety and efficacy of CIRT in patients with external auditory canal (EAC) and middle ear (ME) carcinomas. Methods Thirty‐one patients treated with CIRT at four Japanese institutions were analyzed. Fourteen patients (45.2%) had squamous cell carcinomas, 13 (41.9%) had adenoid cystic carcinomas, and four (12.9%) had other types. Nineteen (61.3%), six (19.4%), three (9.7%), and three (9.7%) patients had T4, T3, T2, and T1 disease, respectively. All patients had N0M0 status. The median radiation dose was 64 Gy (relative biological effectiveness) in 16 fractions. The median gross tumor volume was 33.3 mL. Results The median follow‐up period was 18.4 months (range, 5.1‐85.6). The 1‐ and 3‐year local control and overall survival rates were 75.0% and 55.0% and 79.3% and 58.7%, respectively. Regarding grade 3 or higher toxicities, three patients (9.7%) had grade 3 dermatitis, one (3.2%) had grade 3 mucositis, and two (6.5%) had grade 3 central nervous necrosis (ie, radiation‐induced brain necrosis). No grade 4 or worse reactions were observed. Conclusion CIRT was effective for EAC and ME carcinomas.
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Affiliation(s)
- Kazuhiko Hayashi
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Masashi Koto
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Jun-Ichi Saitoh
- Department of Radiology, University of Toyama, Toyama, Japan
| | | | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Tatsuya Ohno
- Medicine & Biology Division, Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | | | - Ryo Takagi
- Department of Oral Surgery, Tokyo Dental College Suidobashi Hospital, Tokyo, Japan
| | - Hiroaki Ikawa
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Kenji Nemoto
- Department of Radiation Oncology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Takashi Nakano
- Medicine & Biology Division, Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Tadashi Kamada
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
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48
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Shibuya K, Ohno T, Terashima K, Toyama S, Yasuda S, Tsuji H, Okimoto T, Shioyama Y, Nemoto K, Kamada T, Nakano T. Short-course carbon-ion radiotherapy for hepatocellular carcinoma: A multi-institutional retrospective study. Liver Int 2018; 38:2239-2247. [PMID: 30240527 DOI: 10.1111/liv.13969] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 08/21/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Carbon-ion radiation therapy has shown encouraging results in hepatocellular carcinoma patients in single-centre studies. We evaluated the effectiveness and safety of short-course carbon-ion radiation therapy for hepatocellular carcinoma in a multicentre study conducted by the Japan Carbon Ion Radiation Oncology Study Group. METHODS Consecutive hepatocellular carcinoma patients who were treated with carbon-ion radiation therapy in four or fewer fractions at four Japanese institutions between April 2005 and November 2014 were analysed retrospectively. The primary outcome was overall survival; secondary outcomes were local control rate, treatment-related toxicity and radiation-induced liver disease. RESULTS A total of 174 patients were included in this study. Prescribed carbon-ion radiation therapy doses were (relative biological effectiveness): 48.0 Gy in two fractions (n = 46), and 52.8 Gy (n = 108) and 60.0 Gy (n = 20) in four fractions. The median follow-up period was 20.3 (range, 2.9-103.5) months. The overall survival and local control rates at 1, 2 and 3 years were 95.4%, 82.5% and 73.3%; and 94.6%, 87.7% and 81.0% respectively. Multivariate analysis revealed that Eastern Cooperative Oncology Group performance status 1-2, Child-Pugh class B, maximum tumour diameter ≥3 cm, multiple tumours and serum alpha foetoprotein level >50 ng/mL were significant prognostic factors of overall survival. No treatment-related death occurred during the follow-up period. Grades 3 or 4 treatment-related toxicities were observed in 10 patients (5.7%); radiation-induced liver disease was observed in three patients (1.7%). CONCLUSIONS Short-course carbon-ion radiation therapy is a safe, effective and potentially curative therapy for hepatocellular carcinoma.
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Affiliation(s)
- Kei Shibuya
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Tatsuya Ohno
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | - Shingo Toyama
- Ion Beam Therapy Center, SAGA-HIMAT Foundation, Tosu, Japan
| | - Shigeo Yasuda
- National Institute of Radiological Science Hospital, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Hiroshi Tsuji
- National Institute of Radiological Science Hospital, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | | | - Kenji Nemoto
- Department of Radiation Oncology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Tadashi Kamada
- National Institute of Radiological Science Hospital, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Takashi Nakano
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
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49
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Takagi M, Demizu Y, Nagano F, Terashima K, Fujii O, Jin D, Mima M, Niwa Y, Katsui K, Suga M, Yamashita T, Akagi T, Sakata KI, Fuwa N, Okimoto T. Treatment outcomes of proton or carbon ion therapy for skull base chordoma: a retrospective study. Radiat Oncol 2018; 13:232. [PMID: 30477528 PMCID: PMC6260885 DOI: 10.1186/s13014-018-1173-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/06/2018] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The usefulness of particle therapy for skull base chordoma has not been established. The aim of this retrospective study was to analyse the treatment outcomes of proton therapy (PT) and carbon ion therapy (CIT) in patients with skull base chordoma at a single institution. METHODS All patients who underwent PT or CIT with curative intent between 2003 and 2014 at Hyogo Ion Beam Medical Center were included in this study. Twenty-four patients were enrolled. Eleven (46%) received PT and 13 (54%) received CIT. Overall survival (OS), progression-free survival (PFS) and local control (LC) were calculated using the Kaplan-Meier method. Late toxicities were evaluated according to the Common Terminology Criteria for Adverse Events version 4.0. RESULTS The median follow-up was 71.5 months (range, 14-175 months). The five-year LC, PFS and OS rates were 85, 81, and 86%, respectively. The LC (P = 0.048), PFS (P = 0.028) and OS (P = 0.012) were significantly improved in patients who had undergone surgery before particle therapy. No significant differences were observed in the LC rate and the incidence of grade 2 or higher late toxicities between patients who received PT and CIT. CONCLUSIONS Both PT and CIT appear to be effective and safe treatments and show potential to become the standard treatments for skull base chordoma. To increase the local control, surgery before particle therapy is preferable.
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Affiliation(s)
- Masaru Takagi
- Proton Therapy Center, Sapporo Teishinkai Hospital, 3-1, East-1, North-33, Higashi-ku, Sapporo, Hokkaido, 065-0033, Japan. .,Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan.
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan.,Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Fumiko Nagano
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Kazuki Terashima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Osamu Fujii
- Department of Radiation Oncology, Hakodate Goryoukaku Hospital, Hakodate, Hokkaido, Japan
| | - Dongcun Jin
- Proton Therapy Center, Tsuyama Chuo Hospital, Tsuyama, Okayama, Japan
| | - Masayuki Mima
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan.,Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Yasue Niwa
- Proton Therapy Center, Tsuyama Chuo Hospital, Tsuyama, Okayama, Japan
| | - Kuniaki Katsui
- Department of Radiology, Okayama University, Okayama, Okayama, Japan
| | - Masaki Suga
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Tomohiro Yamashita
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan.,Department of Radiation Physics, Hyogo Ion Beam Medical Center Kobe Proton Center, Kobe, Hyogo, Japan
| | - Takashi Akagi
- Department of Radiation Physics, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Koh-Ichi Sakata
- Department of Radiology, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Nobukazu Fuwa
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, Japan
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50
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Abe T, Ohno T, Koto M, Demizu Y, Suefuji H, Tsuji H, Okimoto T, Shioyama Y, Saitoh JI, Shirai K, Nemoto K, Nakano T, Kamada T. A multi-institutional retrospective study of carbon-ion radiotherapy for non-squamous cell malignant tumors of the nasopharynx: Subanalysis of Japan Carbon-Ion Radiation Oncology Study Group study 1402 HN. Cancer Med 2018; 7:6077-6083. [PMID: 30449067 PMCID: PMC6308058 DOI: 10.1002/cam4.1884] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 12/20/2022] Open
Abstract
Background This multi‐institutional retrospective study focused on the clinical outcome of carbon‐ion radiotherapy (C‐ion RT) for non‐squamous cell malignant tumors of the nasopharynx. Methods The Japan Carbon‐ion Radiation Oncology Study Group collected and analyzed data for 43 patients with non‐squamous cell malignant tumors of the nasopharynx treated with C‐ion RT at four institutions in Japan. Results Twenty‐nine patients had adenoid cystic carcinomas, seven had malignant melanomas, three had adenocarcinomas, two had mucoepidermoid carcinomas, and two had other pathologies. Twenty‐six of the 43 patients (61%) had T4 tumors. The most common dose‐fractionation schedule was 64 Gy (relative biological effectiveness) in 16 fractions. The median follow‐up period was 30 months. The 2‐year local control (LC) and overall survival (OS) rates were 88% and 84%, respectively. For late toxicity, one patient developed grade 4 optic nerve disorder and two developed grade 5 pharyngeal hemorrhage. Actual incidence of grade 3 or higher late adverse events was 19%, and included cranial nerve dysfunction, jaw bone necrosis, central nervous system necrosis, and ear inflammation. Conclusions C‐ion RT provided good LC and OS rates with acceptable toxicity for treatment of non‐squamous cell malignant tumors of the nasopharynx.
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Affiliation(s)
- Takanori Abe
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Tatsuya Ohno
- Gunma University Heavy Ion Medical Center, Maebashi, Japan
| | - Masashi Koto
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Yusuke Demizu
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | | | - Hiroshi Tsuji
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - Tomoaki Okimoto
- Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | | | - Jun-Ichi Saitoh
- Department of Radiation Oncology, Toyama University, Toyama, Japan
| | - Katsuyuki Shirai
- Department of Radiology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Kenji Nemoto
- Department of Radiation Oncology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Takashi Nakano
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Tadashi Kamada
- Hospital of the National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
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