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Okamura Y, Nishitai R, Sasaki N, Ito H, Sakamoto T, Itokawa Y, Kusumoto M, Nakai Y, Yamaoka T, Manaka D. Neoadjuvant therapy with intensity-modulated radiotherapy combined with S-1 for borderline-resectable pancreatic cancer. Asia Pac J Clin Oncol 2024; 20:546-554. [PMID: 38771310 DOI: 10.1111/ajco.14080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 03/23/2024] [Accepted: 05/07/2024] [Indexed: 05/22/2024]
Abstract
AIM We evaluated the efficacy of neoadjuvant chemotherapy with intensity-modulated radiotherapy (NAC-IMRT) in patients with borderline-resectable pancreatic cancer (BRPC). METHODS BRPC patients were treated with IMRT (45 Gy/15fr) combined with two courses of S-1 (40 mg/m2 bid) before surgery. Outcomes after NAC-IMRT, surgery, and survival were then evaluated. This single-center retrospective study assessed 26 consecutive patients. RESULTS Twenty-six patients (BR-PV: 7, BR-A: 19) with a median age of 73 years were enrolled from 2016 to 2021. Ten (38%) patients were 75-years-old and above. Twenty-three patients completed NAC-IMRT treatment. The median reductions in tumor size and cancer antigen 19-9 level were 13.6% and 69%, respectively. All 26 patients underwent resection within a median time of 71 days after NAC-IMRT initiation. R0 resection was achieved in 24 patients (92%). The median overall survival (OS) was 28.0 months, and the 1- and 3-year OS rates were 100% and 34%, respectively. The median progression-free survival (PFS) was 12.5 months, and the 1- and 3-year PFS rates were 50% and 32%, respectively. No significant differences were observed in OS between the patients under and over the age of 75 (29 vs. 20 months, p = 0.86). The 12 patients who completed NAC-IMRT, resection, and subsequent adjuvant chemotherapy (AC) exhibited a 3-year survival rate of 73%, which was significantly better than that of the patients who did not receive or complete AC (median OS, not reached vs. 19 months, p < 0.001). CONCLUSION NAC-IMRT showed outstanding clinical efficacy with acceptable tolerability in patients with BRPC, including geriatric patients.
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Affiliation(s)
- Yusuke Okamura
- Department of Surgery, Kyoto Katsura Hospital, Kyoto, Japan
| | - Ryuta Nishitai
- Department of Surgery, Kyoto Katsura Hospital, Kyoto, Japan
| | - Naoya Sasaki
- Department of Surgery, Kyoto Katsura Hospital, Kyoto, Japan
| | - Hitoshi Ito
- Department of Radiation Oncology, Kyoto Katsura Hospital, Kyoto, Japan
| | - Takashi Sakamoto
- Department of Radiation Oncology, Kyoto Katsura Hospital, Kyoto, Japan
| | - Yoshio Itokawa
- Department of Gastroenterological Medicine, Kyoto Katsura Hospital, Kyoto, Japan
| | - Masanori Kusumoto
- Department of Gastroenterological Medicine, Kyoto Katsura Hospital, Kyoto, Japan
| | - Yoshitaka Nakai
- Department of Gastroenterological Medicine, Kyoto Katsura Hospital, Kyoto, Japan
| | - Toshihide Yamaoka
- Department of Diagnostic Imaging and Interventional Radiology, Kyoto Katsura Hospital, Kyoto, Japan
| | - Dai Manaka
- Department of Surgery, Kyoto Katsura Hospital, Kyoto, Japan
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Ogawa A, Yoshimura M, Nakamura M, Adachi T, Iwai T, Ashida R, Mizowaki T. Impact of planning organ at risk volume margins and matching method on late gastrointestinal toxicity in moderately hypofractionated IMRT for locally advanced pancreatic ductal adenocarcinoma. Radiat Oncol 2023; 18:103. [PMID: 37337247 PMCID: PMC10280835 DOI: 10.1186/s13014-023-02288-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/24/2023] [Indexed: 06/21/2023] Open
Abstract
BACKGROUND This study examined the differences in late gastrointestinal (GI) toxicities in moderately hypofractionated intensity-modulated radiation therapy (IMRT) for locally advanced pancreatic ductal adenocarcinoma (LA-PDAC) by changing the planning organs at risk volume (PRV) margin and the target matching method and assessed the causes of adverse events. METHODS We examined 37 patients with LA-PDAC who underwent moderately hypofractionated IMRT between 2016 and 2020 at our institution; 23 patients were treated with wide PRV margins and soft tissue matching (Protocol A) and 14 with narrow PRV margins and fiducial marker matching (Protocol B). The GI toxicities, local control (LC) rate, and overall survival (OS) were assessed for each protocol. The initially planned and daily doses to the gross tumor volume (GTV), stomach, and duodenum, reproduced from cone-beam computed tomography, were evaluated. RESULTS The late GI toxicity rate of grades 3-4 was higher in Protocol B (42.9%) than in Protocol A (4.3%). Although the 2-year LC rates were significantly higher in Protocol B (90.0%) than in Protocol A (33.3%), no significant difference was observed in OS rates. In the initial plan, no deviations were found for the stomach and duodenum from the dose constraints in either protocol. In contrast, daily dose evaluation for the stomach to duodenal bulb revealed that the frequency of deviation of V3 Gy per session was 44.8% in Protocol B, which was significantly higher than the 24.3% in Protocol A. CONCLUSIONS Reducing PRV margins with fiducial marker matching increased GI toxicities in exchange for improved LC. Daily dose analysis indicated the trade-off between the GTV dose coverage and the irradiated doses to the GI. This study showed that even with strict matching methods, the PRV margin could not be reduced safely because of GI inter-fractional error, which is expected to be resolved with online adaptive radiotherapy.
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Affiliation(s)
- Ayaka Ogawa
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Michio Yoshimura
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Mitsuhiro Nakamura
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Department of Advanced Medical Physics, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Takanori Adachi
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Takahiro Iwai
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ryo Ashida
- Department of Radiation Oncology, Kobe City Medical Center General Hospital, 2-1-1, Minatojima Minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Takashi Mizowaki
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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Sasaki M, Nakamura M, Ashida R, Nakata M, Yoshimura M, Mizowaki T. Assessing target localization accuracy across different soft-tissue matching protocols using end-exhalation breath-hold cone-beam computed tomography in patients with pancreatic cancer. JOURNAL OF RADIATION RESEARCH 2023:rrad048. [PMID: 37336503 DOI: 10.1093/jrr/rrad048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 03/23/2023] [Indexed: 06/21/2023]
Abstract
The purpose of this study was to retrospectively assess target localization accuracy across different soft-tissue matching protocols using cone-beam computed tomography (CBCT) in a large sample of patients with pancreatic cancer and to estimate the optimal margin size for each protocol. Fifty-four consecutive patients with pancreatic cancer who underwent 15-fraction volumetric modulated arc therapy under the end-exhalation breath-hold condition were enrolled. Two soft-tissue matching protocols were used according to the resectability classification, including gross tumor volume (GTV) matching for potentially resectable tumors and planning target volume (PTV) matching for borderline resectable or unresectable tumors. The tolerance of the target localization error in both matching protocols was set to 5 mm in any direction. The optimal margin size for each soft-tissue matching protocol was calculated from the systematic and random errors of the inter- and intrafraction positional variations using the van Herk formula. The inter- and intrafraction positional variations of PTV matching were smaller than those of GTV matching. The percentage of target localization errors exceeding 5 mm in the first CBCT scan of each fraction in the superior-inferior direction was 12.6 and 4.8% for GTV and PTV matching, respectively. The optimal margin sizes for GTV and PTV matching were 3.7 and 2.7, 5.4 and 4.1 and 3.9 and 3.0 mm in the anterior-posterior, superior-inferior and left-right directions, respectively. Target localization accuracy in PTV matching was higher than that in GTV matching. By setting the tolerance of the target localization error, treatment can be successful within the planned margin size.
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Affiliation(s)
- Makoto Sasaki
- Division of Clinical Radiology Service, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Mitsuhiro Nakamura
- Department of Information Technology and Medical Engineering, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8397, Japan
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto University, Kyoto 606-8507, Japan
| | - Ryo Ashida
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto University, Kyoto 606-8507, Japan
| | - Manabu Nakata
- Division of Clinical Radiology Service, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Michio Yoshimura
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto University, Kyoto 606-8507, Japan
| | - Takashi Mizowaki
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto University, Kyoto 606-8507, Japan
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MURAKAMI TAKASHI, AIZAWA RIHITO, MATSUO YUKINORI, HANAZAWA HIDEKI, TAURA KOJIRO, FUKUDA AKIHISA, UZA NORIMITSU, SHIOKAWA MASAHIRO, KANAI MASASHI, HATANO ETSURO, SENO HIROSHI, MUTO MANABU, MIZOWAKI TAKASHI. Efficacy and Safety of External-beam Radiation Therapy for Unresectable Primary or Local Recurrent Cholangiocarcinoma. CANCER DIAGNOSIS & PROGNOSIS 2022; 2:634-640. [PMID: 36340447 PMCID: PMC9628149 DOI: 10.21873/cdp.10153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/22/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND/AIM Treatment options for unresectable cholangiocarcinoma are limited. The aim of the study was to evaluate the clinical outcomes of definitive external-beam radiation therapy (EBRT) for patients with unresectable cholangiocarcinoma. PATIENTS AND METHODS Patients with unresectable primary cholangiocarcinoma, or local recurrent cholangiocarcinoma after primary surgery, without distant metastasis who received definitive EBRT (≥45 Gy) between January 2006 and December 2020 at our Institution were analyzed retrospectively. EBRT was basically performed using conventional fractionation (1.8-2 Gy per fraction). Prophylactic nodal irradiation was not performed. RESULTS A total of 21 consecutive patients were analyzed: 7 primary and 14 recurrent cases. The median age was 70 (range=38-85) years at initiation of EBRT. A median dose of 54 (range=45-60) Gy comprising 1.8 (range=1.8-3) Gy per fraction was administered to the primary/recurrent local tumor site. The median follow-up period was 21.6 months. The 2-year overall survival, cause-specific survival, progression-free survival, and local recurrence-free rates were 35.7, 35.7, 16.1, and 32.7%, respectively. Long-term local control (>2 years after EBRT) was achieved in 19.0%. Grade 3 toxicities related to EBRT were observed in 4.8% (duodenum hemorrhage). No grade 4 or higher toxicities were observed. CONCLUSION Definitive EBRT for unresectable cholangiocarcinoma was feasible and achieved long-term local control in a subset of patients. As the avoidance of local recurrence may lead to the benefits of prolonging biliary patency and subsequently alleviating the need for an invasive procedure for biliary drainage, EBRT could be one sustainable therapeutic option for patients with unresectable cholangiocarcinoma.
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Affiliation(s)
- TAKASHI MURAKAMI
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - RIHITO AIZAWA
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - YUKINORI MATSUO
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - HIDEKI HANAZAWA
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan,Department of Radiation Oncology, Kurashiki Central Hospital, Okayama, Japan
| | - KOJIRO TAURA
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan,Department of Gastroenterological Surgery and Oncology, Kitano Hospital Medical Research Institute, Osaka, Japan
| | - AKIHISA FUKUDA
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - NORIMITSU UZA
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - MASAHIRO SHIOKAWA
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - MASASHI KANAI
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - ETSURO HATANO
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - HIROSHI SENO
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - MANABU MUTO
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - TAKASHI MIZOWAKI
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Ogawa A, Nakamura M, Iramina H, Yoshimura M, Mizowaki T. Potential utility of cone-beam CT-guided adaptive radiotherapy under end-exhalation breath-hold conditions for pancreatic cancer. J Appl Clin Med Phys 2022; 24:e13827. [PMID: 36316795 PMCID: PMC9924116 DOI: 10.1002/acm2.13827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/15/2022] [Accepted: 10/07/2022] [Indexed: 02/14/2023] Open
Abstract
PURPOSE The purpose of this study was to demonstrate the potential utility of cone-beam computed tomography (CBCT)-guided online adaptive radiotherapy (ART) under end-exhalation breath-hold (EE-BH) conditions for pancreatic cancer (PC). METHODS Eleven PC patients who underwent 15-fraction volumetric-modulated arc therapy under EE-BH conditions were included. Planning CT images and daily 165 CBCT images were imported into a dedicated treatment planning system. The prescription dose was set to 48 Gy in 15 fractions. The reference plan was automatically generated along with predefined clinical goals. After segmentation was completed on CBCT images, two different plans were generated: One was an adapted (ADP) plan in which re-optimization was performed on the anatomy of the day, and the other was a scheduled (SCH) plan, which was the same as the reference plan. The dose distributions calculated using the synthetic CT created from both planning CT and CBCT were compared between the two plans. Independent calculation-based quality assurance was also performed for the ADP plans, with a gamma passing rate of 3%/3 mm. RESULTS All clinical goals were successfully achieved during the reference plan generation. Of the 165 sessions, gross tumor volume D98% and clinical target volume D98% were higher in 100 (60.1%) and 122 (74.0%) ADP fractions. In each fraction, the V3 Gy < 1 cm3 of the stomach and duodenum was violated in 47 (28.5%) and 48 (29.1%), respectively, of the SCH fractions, whereas no violations were observed in the ADP fractions. There were statistically significant differences in the dose-volume indices between the SCH and ADP fractions (p < 0.05). The gamma passing rates were above 95% in all ADP fractions. CONCLUSIONS The CBCT-guided online ART under EE-BH conditions successfully reduced the dose to the stomach and duodenum while maintaining target coverage.
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Affiliation(s)
- Ayaka Ogawa
- Department of Radiation Oncology and Image‐Applied TherapyGraduate School of MedicineKyoto UniversityKyotoJapan
| | - Mitsuhiro Nakamura
- Department of Radiation Oncology and Image‐Applied TherapyGraduate School of MedicineKyoto UniversityKyotoJapan,Division of Medical PhysicsDepartment of Information Technology and Medical EngineeringHuman Health SciencesGraduate School of MedicineKyoto UniversityKyotoJapan
| | - Hiraku Iramina
- Department of Radiation Oncology and Image‐Applied TherapyGraduate School of MedicineKyoto UniversityKyotoJapan
| | - Michio Yoshimura
- Department of Radiation Oncology and Image‐Applied TherapyGraduate School of MedicineKyoto UniversityKyotoJapan
| | - Takashi Mizowaki
- Department of Radiation Oncology and Image‐Applied TherapyGraduate School of MedicineKyoto UniversityKyotoJapan
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Cui C, Wu X, Deng L, Wang W, Cui W, Wang Y. Modified Glasgow prognostic score predicts the prognosis of patients with advanced esophageal squamous cell carcinoma: A propensity score-matched analysis. Thorac Cancer 2022; 13:2041-2049. [PMID: 35624549 PMCID: PMC9284152 DOI: 10.1111/1759-7714.14486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 12/24/2022] Open
Abstract
Objective The aim of this study is to evaluate the prognostic value of the modified Glasgow prognostic score (mGPS) in advanced esophageal squamous cell carcinoma (SCC) patients. Methods The study enrolled 311 patients with advanced esophageal SCC from January 2012 to December 2018. Univariate and multivariate analyses were calculated by the Cox proportional hazards regression model in advanced esophageal SCC patients. The Kaplan–Meier method was used to evaluate the ability of the mGPS for survival rates. Propensity score‐matched (PSM) analysis was carried out to balance imbalanced variables. Results The Cox proportional hazards analysis showed that factors including M stage, ECOG, mGPS group, and sex were identified as independent predictors. The mGPS presented a good level of overall survival (OS) prediction with a risk‐adopted classification for advanced esophageal SCC patients. The survival rates in advanced esophageal SCC patients with mGPS 0, 1, and 2 were 18.8%, 8.4%, and 4.2%, respectively (p < 0.001). Moreover, before and after PSM, the mGPS was associated with 3‐year survival rates of advanced esophageal SCC patients in the Kaplan–Meier survival analysis. In addition, the mGPS for OS prediction demonstrated better performance than sex and ECOG score. The area under curve (AUC) of the mGPS combined with M stage for the prognosis of advanced esophageal SCC was 0.677 (0.592–0.763). Conclusion The mGPS is a cost‐effective, accessible tool capable of prognosticating in this cohort. It could be a useful surveillance system of prognosis in advanced esophageal SCC patients.
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Affiliation(s)
- Chanjuan Cui
- Department of Laboratory Medicine, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xi Wu
- Department of Comprehensive Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lei Deng
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wenqing Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Cui
- Department of Laboratory Medicine, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanfeng Wang
- Department of Comprehensive Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Masui T, Nagai K, Anazawa T, Sato A, Uchida Y, Nakano K, Yogo A, Kaneda A, Nakamura N, Yoshimura M, Mizowaki T, Uza N, Fukuda A, Matsumoto S, Kanai M, Isoda H, Mizumoto M, Seo S, Hata K, Taura K, Kawaguchi Y, Takaori K, Uemoto S, Hatano E. Impact of neoadjuvant intensity-modulated radiation therapy on borderline resectable pancreatic cancer with arterial abutment; a prospective, open-label, phase II study in a single institution. BMC Cancer 2022; 22:119. [PMID: 35093003 PMCID: PMC8800301 DOI: 10.1186/s12885-022-09244-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/27/2022] [Indexed: 11/10/2022] Open
Abstract
Background Borderline resectable pancreatic cancer (BRPC) is a category of pancreatic cancer that is anatomically widely spread, and curative resection is uncommon with upfront surgery. Intensity-modulated radiation therapy (IMRT) is a form of radiation therapy that delivers precise radiation to a tumor while minimizing the dose to surrounding normal tissues. Here, we conducted a phase 2 study to estimate the curability and efficacy of neoadjuvant chemoradiotherapy using IMRT (NACIMRT) for patients with BRPC with arterial abutment (BRPC-A). Methods A total of 49 BRPC-A patients were enrolled in this study and were treated at our hospital according to the study protocol between June 2013 and March 2021. The primary endpoint was microscopically margin-negative resection (R0) rates and we subsequently analyzed safety, histological effect of the treatment as well as survivals among patients with NACIMRT. Results Twenty-nine patients (59.2%) received pancreatectomy after NACIMRT. The R0 rate in resection patients was 93.1% and that in the whole cohort was 55.1%. No mortality was encountered. Local therapeutic effects as assessed by Evans classification showed good therapeutic effect (Grade 1, 3.4%; Grade 2a, 31.0%; Grade 2b, 48.3%; Grade 3, 3.4%; Grade 4, 3.4%). Median disease-free survival was 15.5 months. Median overall survival in the whole cohort was 35.1 months. The only independent prognostic pre-NACIMRT factor identified was serum carbohydrate antigen 19–9 (CA19-9) > 400 U/ml before NACIMRT. Conclusions NACIMRT showed preferable outcome without significant operative morbidity for BRPC-A patients. NACIMRT contributes to good local tumor control, but a high initial serum CA19-9 implies poor prognosis even after neoadjuvant treatment. Trial Registration UMIN-CTR Clinical Trial: https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000011776 Registration number: UMIN000010113. Date of first registration: 01/03/2013,
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Affiliation(s)
- Toshihiko Masui
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Kazuyuki Nagai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takayuki Anazawa
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Asahi Sato
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuichiro Uchida
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenzo Nakano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akitada Yogo
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akihiro Kaneda
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naoto Nakamura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Michio Yoshimura
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takashi Mizowaki
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Norimitsu Uza
- Department of Gastroenterology and Hepatology, Kyoto University, Kyoto, Japan
| | - Akihisa Fukuda
- Department of Gastroenterology and Hepatology, Kyoto University, Kyoto, Japan
| | - Shigemi Matsumoto
- Department of Real World Data Research and Development, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masashi Kanai
- Department of Clinical Oncology, Kyoto University, Kyoto, Japan
| | - Hiroyoshi Isoda
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, Japan
| | - Masaki Mizumoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoru Seo
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koichiro Hata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kojiro Taura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshiya Kawaguchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kyoichi Takaori
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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