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Hirose TA, Takaki M, Shibayama Y, Fukunaga JI, Kato T, Yoshitake T, Ishigami K. Evaluation of PTV margin in CBCT-based online adaptive radiation therapy for gastric mucosa-associated lymphoid tissue lymphoma. JOURNAL OF RADIATION RESEARCH 2024; 65:507-511. [PMID: 38934659 PMCID: PMC11262853 DOI: 10.1093/jrr/rrae052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Indexed: 06/28/2024]
Abstract
The aim of this study was to investigate planning target volume (PTV) margin in online adaptive radiation therapy (oART) for gastric mucosa-associated lymphoid tissue (MALT) lymphomas. Four consecutive patients with gastric MALT lymphoma who received oART (30 Gy in 15 fractions) on the oART system were included in this study. One hundred and twenty cone-beam computed tomography (CBCT) scans acquired pre- and post-treatment of 60 fractions for all patients were used to evaluate intra- and interfractional motions. Patients were instructed on breath-holding at exhalation during image acquisition. To assess the intrafraction gastric motion, different PTVs were created by isotropically extending the CTV contoured on a pre-CBCT image (CTVpre) at1 mm intervals. Intrafraction motion was defined as the amount of expansion covering the contoured CTV on post-CBCT images (CTVpost). Interfractional motion was defined as the amount of reference CTV expansion that could cover each CTVpre, as well as the evaluation of the intrafractional motion. PTV margins were estimated from the cumulative proportion of fraction covering the intra- and interfractional motions. The extent of expansion covering the CTVs in 90% of fractions was adopted as the PTV margin. The PTV margin for intrafractional gastric motion using the oART system with breath-holding was 14 mm. In contrast, the PTV margin for interfractional gastric organ motion without the oART system was 25 mm. These results indicated that the oART system can reduce the PTV margin by >10 mm. Our results could be valuable data for oART cases.
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Affiliation(s)
- Taka-aki Hirose
- Division of Radiology, Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Masanori Takaki
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Yusuke Shibayama
- Division of Radiology, Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Jun-ichi Fukunaga
- Division of Radiology, Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Toyoyuki Kato
- Division of Radiology, Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Tadamasa Yoshitake
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Kousei Ishigami
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
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Smith CD, Gupta S, Sinn Chin Y, Thompson SR. Long term outcomes of gastric mucosa-associated lymphoid tissue lymphoma treated with radiotherapy: A multi-center retrospective cohort study. Hematol Oncol 2023; 41:71-77. [PMID: 36150219 PMCID: PMC10092891 DOI: 10.1002/hon.3078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 09/09/2022] [Accepted: 09/17/2022] [Indexed: 02/03/2023]
Abstract
Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is a rare disease. Radiotherapy remains an important definitive modality. We assessed the long term outcomes of patients with early stage gastric MALT marginal zone lymphoma (MZL) treated with definitive radiotherapy at three institutions in New South Wales, Australia. A retrospective, multi-center study of patients with gastric MALT MZ lymphoma treated with radiotherapy between 1st of March 1999 and 31st of May 2020 was conducted. Eligible patients were: age ≥18 years, treated with curative-intent radiotherapy, pathological diagnosis of MALT MZ lymphoma. There were 33 eligible patients. Complete response (CR) was reported in 30/31 (96.7%) of endoscopically assessed cases. During median follow up of 66.2 months (IQR 22-119 months), estimated 5 and 10 years local relapse free survival were 92.6% (95% CI: 83-100) and 92.6% (95% CI: 83-100); distant relapse free survival 95.8% (95% CI 88.2-100) and 64.7% (95% CI 43.4-96.4); freedom from treatment failure 92.6% (95% CI; 83.1-100) and 62.5% (95% CI; 41.7-93.7), respectively. There were six documented recurrences; one local, four distant, and both in one patient; two cases were high grade recurrences. 5 and 10 years OS were 92.4% and 73.5% respectively. There were no grade 3-5 late toxicities or treatment related deaths. Patients with gastric MALT MZL treated with definitive radiotherapy have excellent outcomes. In long term follow up a significant proportion developed distant low grade disease. Extended follow up should be considered in these patients. Treatment is well tolerated with minimal toxicity. Radiotherapy remains an important modality in the treatment of gastric MALT MZ lymphoma.
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Affiliation(s)
- Clinton D Smith
- Department of Radiation Oncology, Prince of Wales Hospital, Sydney, Australia.,Prince of Wales Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia
| | - Sanjiv Gupta
- Department of Radiation Oncology, Calvary Mater Newcastle, Waratah, Australia.,Faculty of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - Yaw Sinn Chin
- Prince of Wales Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia.,Department of Radiation Oncology, St George Hospital, Sydney, Australia
| | - Stephen R Thompson
- Department of Radiation Oncology, Prince of Wales Hospital, Sydney, Australia.,Prince of Wales Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia
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Rolf D, Reinartz G, Rehn S, Kittel C, Eich HT. Development of Organ-Preserving Radiation Therapy in Gastric Marginal Zone Lymphoma. Cancers (Basel) 2022; 14:cancers14040873. [PMID: 35205623 PMCID: PMC8869852 DOI: 10.3390/cancers14040873] [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: 11/29/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Gastric marginal zone lymphoma of the stomach is a rare cancer type primarily treated with oral proton pump inhibitors. If the disease does not respond to this, radiation is the treatment of choice. This review presents the development of radiation therapy over the last decades. Earlier, the stomach was surgically removed and irradiation was performed using large-field techniques and high doses of radiation. Currently, the standard treatment is the use of small-volume radiation therapy (with few side effects) with the preservation of the stomach, which provides excellent outcomes. In addition, this paper provides an outlook on current studies and possible future developments. Abstract Gastric marginal zone lymphoma (gMZL) of mucosa-associated lymphoid tissue (MALT) may persist even after H. pylori eradication, or it can be primarily Helicobacter pylori (H. pylori) independent. For patients without the successful eradication of lymphoma, or with progressive disease, treatment options have historically included partial or total gastrectomy. Presently, in these instances, curative radiation therapy (RT) is the current standard of care. This review emphasizes the historically changing role of radiation therapy in gMZL, progressing from large-volume RT without surgery, to localized RT, on its own, as a curative organ-preserving treatment. This overview shows the substantial progress in radiation therapy during the recent two to three decades, from high-dose, large-field techniques to low-dose, localized target volumes based on advanced imaging, three-dimensional treatment planning, and advanced treatment delivery techniques. RT has evolved from very large extended field techniques (EF) with prophylactic treatment of the whole abdomen and the supradiaphragmatic lymph nodes, applying doses between 30 and 50 Gy, to involved-field RT (IF), to the current internationally recommended involved site radiation therapy (ISRT) with a radiation dose of 24–30 Gy in gMZL. Stage-adapted RT is a highly effective and safe treatment with excellent overall survival rates and very rare acute or late treatment-related toxicities, as shown not only in retrospective studies, but also in large prospective multicenter studies, such as those conducted by the German Study Group on Gastrointestinal Lymphoma (DSGL). Further de-escalation of the radiation treatments with low-dose 20 Gy, as well as ultra-low-dose 4 Gy radiation therapy, is under investigation within ongoing prospective clinical trials of the International Lymphoma Radiation Oncology Group (ILROG) and of the German Lymphoma Alliance (GLA).
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Katsuta T, Matsuura K, Kashiwado K. Analysis of Chronic Kidney Disease After Radiation Therapy for Gastric/Duodenal Mucosa-Associated Lymphoid Tissue Lymphoma. Adv Radiat Oncol 2021; 6:100788. [PMID: 34934863 PMCID: PMC8655426 DOI: 10.1016/j.adro.2021.100788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 08/23/2021] [Indexed: 11/26/2022] Open
Abstract
Purpose This study aimed to evaluate the relationship between chronic kidney disease (CKD) after radiation therapy for gastric/duodenal mucosa-associated lymphoid tissue lymphoma and dose-volume histogram of the kidneys. Methods and Materials We retrospectively reviewed 40 patients who received 3-dimensional conformal radiation therapy. CKD was evaluated using the Common Terminology Criteria for Adverse Events version 5.0. The mean dose of bilateral kidneys/right kidney/left kidney (Dmean of b-kidneys) (Dmean of r-kidney) (Dmean of l-kidney), bilateral kidneys/right kidney/left kidney volume receiving ≥ x Gy (Vx of b-kidneys) (Vx of r-kidney) (Vx of l-kidney), and patients’ baseline clinical characteristics were analyzed. Results The median radiation therapy dose was 28 (range, 24-44.8) Gy in 14 fractions. The median follow-up period was 63.1 months, and the 5-year cumulative incidence of grade 2 CKD rate was 14.8%. Among several factors, V5 of b-kidneys was most strongly associated with grade 2 or worse CKD, with an area under the curve of 0.81 in the receiver operating characteristic curve. The 5-year incidence rate in patients with V5 of b-kidneys ≥ 58% was significantly higher than that in other patients (24.5% and 9.8%, respectively; P < .05). Conclusions In this study using 3-dimensional conformal radiation therapy, the rate of adverse events at 5 years was low, many patients showed toxicity after 5 years; thus, continuous follow-up is necessary to detect potential nephrotoxicity. Our data demonstrate that V5 of b-kidneys was most strongly associated with the risk of CKD. With lower doses and more advanced techniques in recent years, the incidence of CKD may be further reduced.
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Affiliation(s)
- Tsuyoshi Katsuta
- Department of Radiation Oncology, Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital, Sendamachi, Naka-ku, Hiroshima City, Hiroshima, Japan
| | - Kanji Matsuura
- Department of Radiation Oncology, Hiroshima City Hospital Organization, Hiroshima City Hiroshima Citizens Hospital, Motomachi, Naka-ku, Hiroshima City, Hiroshima, Japan
| | - Kozo Kashiwado
- Department of Radiation Oncology, Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital, Sendamachi, Naka-ku, Hiroshima City, Hiroshima, Japan
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Yahalom J, Xu AJ, Noy A, Lobaugh S, Chelius M, Chau K, Portlock C, Hajj C, Imber BS, Straus DJ, Moskowitz CH, Coleman M, Zelenetz AD, Zhang Z, Dogan A. Involved-site radiotherapy for Helicobacter pylori-independent gastric MALT lymphoma: 26 years of experience with 178 patients. Blood Adv 2021; 5:1830-1836. [PMID: 33787863 PMCID: PMC8045489 DOI: 10.1182/bloodadvances.2020003992] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 01/26/2021] [Indexed: 12/31/2022] Open
Abstract
Treatment options for Helicobacter pylori-independent gastric mucosa-associated lymphoid tissue (MALT) lymphoma (GML) include surgery, immunotherapy, chemotherapy, and radiation therapy (RT). The purpose of this study was to investigate the efficacy and safety of RT and routine endoscopic surveillance, hypothesizing that most patients are curable with RT alone. We queried a single institution database at a tertiary referral cancer center for patients with H pylori-independent GML treated with RT between 1991 and 2017. Response was assessed by follow-up endoscopies (EGDs) starting 10 to 12 weeks post-RT. Computed tomography scans were also part of the follow-up program, and positron emission tomography was added when clinically appropriate. We identified 178 patients (median age, 63 years; range, 25-89 years); 86% had stage I disease, 7% had stage II disease, and 7% had stage IV disease. Median RT dose was 3000 cGy over 20 fractions. Ninety-five percent of patients exhibited complete pathologic response on posttreatment EGD. Two patients experienced grade 3 toxicity, and 2 patients experienced in-field secondary malignancies. Over a median follow-up of 6.2 years, 9.6% experienced local failures, and 11.8% developed distant sites of disease. Five-year and 10-year overall survival were 94% and 79%, respectively, from last date of RT. RT is a highly effective and safe treatment for GML with excellent overall survival and very rare acute or late treatment-related toxicities. Favorable outcomes from this large retrospective sample of patients provide credible and compelling support for RT as standard of care for H pylori-independent GML.
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Affiliation(s)
| | - Amy J Xu
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | - Ariela Noy
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | | | - Monica Chelius
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | - Karen Chau
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | - Carol Portlock
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | - Carla Hajj
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | | | - David J Straus
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | | | - Morton Coleman
- New York-Presbyterian/Weill Cornell Medical College, New York, NY
| | | | - Zhigang Zhang
- Memorial Sloan Kettering Cancer Center, New York, NY; and
| | - Ahmet Dogan
- Memorial Sloan Kettering Cancer Center, New York, NY; and
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Shimohigashi Y, Toya R, Saito T, Kono Y, Doi Y, Fukugawa Y, Watakabe T, Matsumoto T, Kai Y, Maruyama M, Oya N. Impact of four-dimensional cone-beam computed tomography on target localization for gastric mucosa-associated lymphoid tissue lymphoma radiotherapy: reducing planning target volume. Radiat Oncol 2021; 16:14. [PMID: 33446225 PMCID: PMC7807891 DOI: 10.1186/s13014-020-01734-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 12/17/2020] [Indexed: 12/27/2022] Open
Abstract
Background Radiotherapy of gastric mucosa-associated lymphoid tissue (MALT) lymphoma should be delivered to the entire stomach with planning target volume (PTV) that accounts for variations in stomach volume, respiratory movement, and patient set-up error. In this study, we evaluated whether the use of four-dimensional cone-beam computed tomography (4D-CBCT) reduces the PTV. Methods Eight patients underwent radiotherapy with 15 fractions of gastric MALT lymphoma using 4D-CBCT. PTV structures of 5–30 mm margins (5 mm intervals) from the clinical target volume (CTV) delineated based on the 4D-CT images (CTV-4D) were generated. For the target localization, we performed matching based on skin marking (skin matching), bone anatomy (bone matching), and stomach anatomy (4D soft-tissue matching) based on registration between planning CT and 4D-CBCT images from 10 phases. For each patient, we calculated the covering ratio (CR) of the stomach with variable PTV structures, based on the 4D-CBCT images, with a total of 150 phases [CR (%) = (number of covering phases/150 phases) × 100], for three target localization methods. We compared the CR values of the different target localization methods and defined the PTV with an average CR of ≥ 95% for all patients. Results The average CR for all patients increased from 17.9 to 100%, 19.6 to 99.8%, and 33.8 to 100%, in the skin, bone, and 4D soft-tissue matchings, respectively, as the PTV structures increased from 5 to 30 mm. The CR obtained by 4D soft-tissue matching was superior to that obtained by skin (P = 0.013) and bone matching (P = 0.008) for a PTV structure of 15 mm margin. The PTV required an additional margin of 20 mm (average CR: 95.2%), 25 mm (average CR: 99.1%), and 15 mm (average CR: 98.0%) to CTV-4D for the skin, bone, and 4D soft-tissue matchings, respectively. Conclusions This study demonstrates that the use of 4D-CBCT reduces the PTV when applying 4D soft-tissue matching, compared to skin and bone matchings. Additionally, bone matching does not reduce the PTV as compared with traditional skin matching.
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Affiliation(s)
- Yoshinobu Shimohigashi
- Department of Radiological Technology, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan.
| | - Ryo Toya
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Tetsuo Saito
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Yumiko Kono
- Department of Radiological Technology, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Yasuhiro Doi
- Department of Radiological Technology, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Yoshiyuki Fukugawa
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Takahiro Watakabe
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Tadashi Matsumoto
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Yudai Kai
- Department of Radiological Technology, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Masato Maruyama
- Department of Radiological Technology, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Natsuo Oya
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
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Radiotherapy in Early-stage Gastric MALT: Improved Survival Without Increased Cardiac Death. Am J Clin Oncol 2021; 43:770-775. [PMID: 32841963 DOI: 10.1097/coc.0000000000000747] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE Radiotherapy (RT) is an effective treatment for localized gastric mucosa-associated lymphoid tissue (MALT) lymphomas unresponsive to antibiotic therapy; however, irradiating the stomach can result in significant radiation to the heart, a risk factor for cardiac disease. We analyzed the Surveillance, Epidemiology, and End Results database to evaluate outcomes related to cardiac disease among patients treated with RT for stage I gastric MALT. MATERIALS AND METHODS We identified adult patients treated between 1993 and 2014. The relationship between treatment modality (RT, chemotherapy, combination, and no treatment) and overall survival (OS), mucosa-associated lymphoid tissue-specific survival (MSS), non-mucosa-associated lymphoid tissue-specific survival (non-MSS), and cardiac-specific survival (CSS) was assessed using the Kaplan-Meier estimator and Cox proportional hazards analyses. RESULTS A total of 2996 patients (median follow-up, 5.6 y) were analyzed: 27.5% had received RT alone, 12.1% chemotherapy alone, 3.9% chemoradiotherapy, and 56.5% no/unknown treatment (including antibiotic therapy). Compared with RT alone, patients who received chemotherapy alone exhibited worse OS (hazard ratio [HR]: 1.67; 95% confidence interval [CI]: 1.32-2.10; P<0.001) and MSS (HR: 2.10; 95% CI: 1.36-3.23; P=0.001). Although CSS appeared worse in patients who received chemotherapy (HR: 1.56; 95% CI: 0.92-2.66; P=0.10), it was not statistically significant. When comparing orbital and gastric MALT patients, there was no significant difference in CSS (HR: 0.80; 95% CI: 0.49-1.31; P=0.38). CONCLUSIONS RT improved survival among patients with stage I gastric MALT without increasing the risk of cardiac death. Those with gastric MALT exhibited similar CSS to those with orbital MALT. Although we cannot analyze nonfatal cardiac toxicity, these results suggest that, absent antibiotic therapy, RT should remain first-line treatment for early-stage gastric MALT.
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A Prospective Trial of Radiation Therapy Efficacy and Toxicity for Localized Mucosa-associated Lymphoid Tissue (MALT) Lymphoma. Int J Radiat Oncol Biol Phys 2020; 109:1414-1420. [PMID: 33309978 DOI: 10.1016/j.ijrobp.2020.11.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/17/2020] [Accepted: 11/28/2020] [Indexed: 12/16/2022]
Abstract
PURPOSE We report the long-term results of a prospective trial conducted to determine the efficacy and safety of radiation therapy (RT) alone in treating localized mucosa-associated lymphoid tissue (MALT) lymphoma. METHODS AND MATERIALS Patients with localized MALT lymphoma were eligible and treated with involved field RT to doses of 24 to 39.6 Gy. Relapse-free survival (RFS) was the primary endpoint. Kaplan-Meier analysis was used to estimate RFS, progression-free survival (PFS), and overall survival (OS) defined from time of study entry. Preplanned subgroup analyses were performed based on site of involvement. RESULTS From 2000 to 2012, 75 patients were accrued; 73 received protocol-specified RT. Median follow-up was 9.8 years. Thirty-four patients had gastric MALT, 17 orbital, 13 head and neck nonorbit, 4 skin, and 5 disease of other sites. Thirteen of 34 patients with gastric MALT were Helicobacter pylori positive at the time of initial diagnosis and underwent 1 to 3 courses of triple antibiotic therapy. All gastric MALT patients had documented persistent MALT without H. pylori on endoscopy before enrollment in the study. All patients achieved a complete response with a median time of 3 months. Eleven patients (15%) had disease relapse, 9 of which were at sites outside the RT field with median time to progression of 38.3 months. Median PFS was 17.5 years, and median RFS and OS were not reached. The 10-year relapse-free rate was 83% (95% confidence interval [CI], 74%-93%). The 10-year PFS rate was 71% (95% CI, 60%-84%). The 10-year OS rate was 86% (95% CI, 77%-96%). RFS, PFS, and OS did not differ by disease site (P = .17, .43, and .50, respectively). All relapses were successfully salvaged. One patient developed metastatic gastric adenocarcinoma and was found to also have recurrent MALT on biopsy. Otherwise, all relapsed patients were alive without evidence of disease at last follow-up, and no patient died of MALT lymphoma. Sixty-seven patients (92%) experienced acute toxicity during radiation, all of which were grade 1 and 2, with only 1 grade 3 toxicity. Twenty-two patients (30%) experienced late toxicity, with only 1 grade 3 toxicity. CONCLUSIONS This prospective study confirms that RT for MALT lymphoma provides excellent long-term RFS with acceptable rates of toxicity. Current efforts are focused on RT de-escalation in an effort to further avoid treatment-related morbidity. CLINICALTRIALS.GOV: NCT04465162.
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Christopherson KM, Gunther JR, Fang P, Peterson SL, Roach KE, Wong PF, Mirkovic D, Lim TY, Wang H, Wang XA, Wang C, Garcia J, Dabaja BS, Pinnix CC. Decreased heart dose with deep inspiration breath hold for the treatment of gastric lymphoma with IMRT. Clin Transl Radiat Oncol 2020; 24:79-82. [PMID: 32642563 PMCID: PMC7334790 DOI: 10.1016/j.ctro.2020.05.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 02/07/2023] Open
Abstract
Radiation therapy to the stomach can result in unintended radiation to the heart. Deep inspiration breath-hold can provide spatial separation between the heart and stomach. Deep inspiration breath-hold permits decreased dose to organs at risk when treating the stomach.
We hypothesized that deep inspiration breath-hold (DIBH) and computed-tomography image-guided radiotherapy (CT-IGRT) may be beneficial to decrease dose to organs at risk (OARs), when treating the stomach with radiotherapy for lymphoma. We compared dosimetric parameters of OARs from plans generated using free-breathing (FB) versus DIBH for 10 patients with non-Hodgkin lymphoma involving the stomach treated with involved site radiotherapy. All patients had 4DCT and DIBH scans. Planning was performed with intensity modulated radiotherapy (IMRT) to 30.6 Gy in 17 fractions. Differences in target volume and dosimetric parameters were assessed using a paired two-sided t-test. All heart and left ventricle parameters including mean dose, V30, V20, V10, and V5 were statistically significantly lower with DIBH. For IMRT-FB plans the average mean heart dose was 4.9 Gy compared to 2.6 Gy for the IMRT-DIBH group (p < 0.001). There was a statistically significant decrease in right kidney dose with DIBH. For lymphoma patients treated to the stomach with IMRT, DIBH provides superior OAR sparing compared to FB-based planning, most notably reducing dose to the heart and left ventricle. This strategy could be considered when treating other gastric malignancies.
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Affiliation(s)
- Kaitlin M Christopherson
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jillian R Gunther
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Penny Fang
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Stacy L Peterson
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Karen E Roach
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Pei-Fong Wong
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dragan Mirkovic
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Tze Yee Lim
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - He Wang
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xin A Wang
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Congjun Wang
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - John Garcia
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bouthaina S Dabaja
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Chelsea C Pinnix
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Choi SH, Park SH, Lee JJB, Baek JG, Kim JS, Yoon HI. Combining deep-inspiration breath hold and intensity-modulated radiotherapy for gastric mucosa-associated lymphoid tissue lymphoma: Dosimetric evaluation using comprehensive plan quality indices. Radiat Oncol 2019; 14:59. [PMID: 30961618 PMCID: PMC6454700 DOI: 10.1186/s13014-019-1263-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 03/27/2019] [Indexed: 12/16/2022] Open
Abstract
Background Although there have been many attempts to increase the therapeutic ratio of radiotherapy for gastric mucosa-associated lymphoid tissue lymphoma (MALToma), only a few planning studies have reported the efficacy of the modern radiotherapy technique till date. Therefore, we performed the dosimetric comparison among 3-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated radiotherapy (IMRT) plans, using deep-inspiration breath hold (DIBH) or free-breathing (FB) techniques, to determine the most optimal plan for gastric MALToma. Methods We evaluated 9 patients with gastric MALToma for whom 3D-CRT, step-and-shoot IMRT (SIMRT), volumetric-modulated arc therapy (VMAT), and tomotherapy plans with identical prescribed doses were generated using DIBH or FB computed tomography (CT). Planning target volume (PTV) coverage and non-target doses were calculated for each plan and compared with plan quality metric (PQM) scores. Results All 72 plans of 9 patients satisfied our dosimetric goals, and the IMRT plans and 3D-CRT plans had similarly good conformity index values with no differences related to respiratory movement. IMRT plans yielded significantly better doses to the organs-at-risk, and DIBH plans yielded significantly lower liver, heart, and lung Dmean and spinal cord Dmax with smaller irradiated volumes compared to FB plans. For the mean PQM scores, VMAT-DIBH and SIMRT-DIBH yielded the best scores, whereas 3D plans provided reduced beam monitor unit values. Conclusion Our findings demonstrate that modern RT technologies (DIBH with VMAT or SIMRT) could potentially provide excellent target coverage for gastric MALToma while reducing doses to organs-at-risk. However, the relevance of the most optimal plan considering clinical outcomes should be confirmed further in a larger patient cohort. Electronic supplementary material The online version of this article (10.1186/s13014-019-1263-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Seo Hee Choi
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - So Hyun Park
- Department of Radiation Oncology, Jeju National University Hospital, Jeju University College of Medicine, Jeju, South Korea
| | - Jason Joon Bock Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jong Geol Baek
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jin Sung Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
| | - Hong In Yoon
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
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11
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Reinartz G, Pyra RP, Lenz G, Liersch R, Stüben G, Micke O, Willborn K, Hess CF, Probst A, Fietkau R, Jany R, Schultze J, Rübe C, Hirt C, Fischbach W, Bentz M, Daum S, Pott C, Tiemann M, Möller P, Neubauer A, Wilhelm M, Willich N, Berdel WE, Eich HT. Favorable radiation field decrease in gastric marginal zone lymphoma : Experience of the German Study Group on Gastrointestinal Lymphoma (DSGL). Strahlenther Onkol 2019; 195:544-557. [PMID: 30859254 DOI: 10.1007/s00066-019-01446-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/15/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Long-term impact of stage-adapted field reduction in a large cohort of gastric marginal zone lymphoma (gMZL) patients treated conservatively with curative radiation therapy (RT). PATIENTS AND METHODS Prospective analysis of paper records of 290 patients with stage IE-IIE gMZL, treated in 78 radiotherapeutic institutions in Germany from 1992-2013. Stage-adapted radiation fields decreased from extended field (EF) to involved field (IF) over the course of three consecutive prospective trials of the German Study Group on Gastrointestinal Lymphoma (DSGL). Treatment results were compared between the three cohorts. RESULTS Overall collective with median age of 60 years, slight male predominance (m:f = 1.1:1) and ratio of disease stage I:stage II = 2.1:1. Median follow-up 6.4 years in total: 13.0 years in the first gastrointestinal study (GIT 1992), 8.2 years in the second (GIT 1996) and 4.7 years in the third study (DSGL 01/2003). Stage-adapted radiation field decrease together with further technological development led to reduced relative frequencies of acute/chronic adverse effects and until now was accompanied by lower disease recurrence. The third study design with smallest field size (IF in stage I, locoregional EF in stage II) achieved the best survival outcome at the 5‑year follow-up (overall survival 92.7%, event-free survival 89.5% and lymphoma-specific survival 100.0%). Disease relapse observed in 10 patients. Cumulative incidence of disease-specific death was 1.7% of the followed patients. Primary disease stage associated with lymphoma-specific survival. CONCLUSION Stage-adapted reduction towards IF in gMZL resulted in favorable adverse effects, local control and survival rates. These results support further decreases in modern RT of gMZL.
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Affiliation(s)
- Gabriele Reinartz
- Department of Radiation Oncology, University Hospital of Münster, Building A1, Albert Schweitzer Campus 1, 48149, Münster, Germany.
| | - Regina P Pyra
- Department of Radiation Oncology, University Hospital of Münster, Building A1, Albert Schweitzer Campus 1, 48149, Münster, Germany
| | - Georg Lenz
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital of Münster, Münster, Germany
| | - Rüdiger Liersch
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital of Münster, Münster, Germany
| | - Georg Stüben
- Department of Radiation Oncology, Hospital Augsburg, Augsburg, Germany
| | - Oliver Micke
- Department of Radiotherapy and Radiation Oncology, Franziskus Hospital Bielefeld, Bielefeld, Germany
| | - Kay Willborn
- Department of Radiotherapy and Radiation Oncology, Pius Hospital Oldenburg, Oldenburg, Germany
| | - Clemens F Hess
- Department of Radiation Oncology, University Hospital of Göttingen, Göttingen, Germany
| | - Andreas Probst
- Department of Gastroenterology, Central Hospital, Augsburg, Germany
| | - Rainer Fietkau
- Department of Radiation Oncology, University of Erlangen, Erlangen, Germany
| | - Ralf Jany
- Department of Radiation Oncology, Saint Marien Hospital, Hamm, Germany
| | - Jürgen Schultze
- Department of Radiation Oncology, University of Schleswig-Holstein, Kiel, Germany
| | - Christian Rübe
- Department of Radiation Oncology, University of Saarland, Homburg, Germany
| | - Carsten Hirt
- Department of Medical Oncology, University of Greifswald, Greifswald, Germany
| | - Wolfgang Fischbach
- Department of Gastroenterology and Oncology, Hospital of Aschaffenburg, Aschaffenburg, Germany
| | - Martin Bentz
- Department of Medical Oncology, Municipal Hospital of Karlsruhe, Karlsruhe, Germany
| | - Severin Daum
- Department of Gastroenterology, University Charité, Berlin, Germany
| | - Christiane Pott
- Department of Medical Oncology, University of Schleswig-Holstein, Kiel, Germany
| | | | - Peter Möller
- Department of Pathology, University of Ulm, Ulm, Germany
| | - Andreas Neubauer
- Department of Medical Oncology, University of Marburg, Marburg, Germany
| | - Martin Wilhelm
- Department of Medical Oncology, Klinikum Nürnberg, Paracelsus Medical University, Nürnberg, Germany
| | - Normann Willich
- Department of Radiation Oncology, University Hospital of Münster, Building A1, Albert Schweitzer Campus 1, 48149, Münster, Germany
| | - Wolfgang E Berdel
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital of Münster, Münster, Germany
| | - Hans T Eich
- Department of Radiation Oncology, University Hospital of Münster, Building A1, Albert Schweitzer Campus 1, 48149, Münster, Germany
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12
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Chung JH, Na K, Kim IH. Benefit of volumetric-modulated arc therapy over three-dimensional conformal radiotherapy for stage I-II extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue in the stomach: a dosimetric comparison. Radiat Oncol J 2018; 36:332-340. [PMID: 30630272 PMCID: PMC6361246 DOI: 10.3857/roj.2018.00402] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/27/2018] [Indexed: 12/12/2022] Open
Abstract
Purpose To retrospectively analyze dosimetric parameters of volumetric-modulated arc therapy (VMAT) and three-dimensional conformal radiotherapy (3D-CRT) delivered to extranodal marginal zone B-cell lymphomas of mucosa-associated lymphoid tissue in the stomach (gastric MALT lymphoma) to find out advantages of VMAT and conditions for definite benefits of VMAT. Materials and Methods Fifty patients with stage I-II gastric MALT lymphoma received VMAT (n = 14) or 3D-CRT (n = 36) between December 2005 and April 2018. Twenty-seven patients were categorized according to whether the planning target volume (PTV) overlaps kidney(s). Dosimetric parameters were analyzed by dose-volume histogram. Results Radiation dose to the liver was definitely lower with VMAT in terms of mean dose (p = 0.026) and V15 (p = 0.008). The V15 of the left kidney was lower with VMAT (p = 0.065). For those with PTV overlapping kidney(s), the left kidney V15 was significantly lower with VMAT. Furthermore, the closer the distance between the PTV and kidneys, the less the left kidney V15 with VMAT (p = 0.037). Delineation of kidney(s) by integrating all respiratory phases had no additional benefit. conclusions VMAT significantly increased monitor units, reduced treatment time and radiation dose to the liver and kidneys. The benefit of VMAT was definite in reducing the left kidney V15, especially in geometrically challenging conditions of overlap or close separation between PTV and kidney(s).
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Affiliation(s)
- Joo-Hyun Chung
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Kyoungsu Na
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Il Han Kim
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Cancer Research Institute, Seoul National University, Seoul, Korea
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13
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Violeta Filip P, Cuciureanu D, Sorina Diaconu L, Maria Vladareanu A, Silvia Pop C. MALT lymphoma: epidemiology, clinical diagnosis and treatment. J Med Life 2018; 11:187-193. [PMID: 30364585 PMCID: PMC6197515 DOI: 10.25122/jml-2018-0035] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Primary gastric lymphoma (PGL) represents a rare pathology, which can be easily misdiagnosed because of unspecific symptoms of the digestive tract. Histologically, PGL can vary from indolent marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT) to aggressive diffuse large B-cell lymphoma (DLBCL). During the years, clinical trials revealed the important role of Helicobacter pylori (H. pylori) in the pathogenesis of gastric MALT lymphoma. Infection with Helicobacter pylori is an influential promoter of gastric lymphomagenesis initiation. Long-term studies revealed that eradication therapy could regress gastric lymphomas.
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Affiliation(s)
- Petruta Violeta Filip
- "Carol Davila" University of Medicine and Pharmacy, Bucharest.,Department of Internal Medicine II and Gastroenterology, Emergency University Hospital, Bucharest
| | | | - Laura Sorina Diaconu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest.,Department of Internal Medicine II and Gastroenterology, Emergency University Hospital, Bucharest
| | - Ana Maria Vladareanu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest.,Department of Internal Medicine II and Gastroenterology, Emergency University Hospital, Bucharest
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14
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Guss ZD, Madkhali A, Chen Q, Zhang Y, Dah S, Moore J, Terezakis SA. Intensity-modulated involved-site radiation therapy for non-Hodgkin lymphoma of the head and neck. Leuk Lymphoma 2017; 58:2755-2757. [DOI: 10.1080/10428194.2017.1312388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Zachary David Guss
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Abdossalam Madkhali
- Institute for Radiation Oncology, University of Oxford, Oxford, UK
- Department of Medicine, King Saud University, Riyadh, Riyadh Province, Saudi Arabia
| | - Qinyu Chen
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yin Zhang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Samson Dah
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Joseph Moore
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Stephanie Alicia Terezakis
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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15
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Wang H, Milgrom SA, Dabaja BS, Smith GL, Martel M, Pinnix CC. Daily CT guidance improves target coverage during definitive radiation therapy for gastric MALT lymphoma. Pract Radiat Oncol 2017; 7:e471-e478. [PMID: 28377138 PMCID: PMC6065106 DOI: 10.1016/j.prro.2017.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/27/2017] [Accepted: 03/01/2017] [Indexed: 12/25/2022]
Abstract
PURPOSE Radiation therapy (RT) for gastric mucosa-associated lymphoid tissue (MALT) lymphoma is challenging because of variation in the stomach's position, size, and shape. We investigated the interfractional changes in stomach location, consequent dosimetric effects, and impact of daily computed tomography image guidance RT (CT-IGRT). METHODS AND MATERIALS Twelve patients treated for gastric MALT lymphoma with intensity modulated radiation therapy, using a breath-hold technique and restriction of oral intake, were studied retrospectively. The planning target volume (PTV) comprised a 0.5 to 1.0 cm expansion of the stomach. The prescription dose was 30 Gy in 15 to 20 fractions. CT-IGRT was performed daily using CT-on-Rails. Dosimetry was calculated on 229 daily CT images after bony versus CT-based soft tissue alignment, and doses delivered to the target and adjacent structures were compared with the treatment plan. Target coverage was expressed as the percent of the clinical target volume (CTV) and PTV receiving ≥95% of the prescribed dose (V95%). RESULTS The average change in stomach volume was -12.4% (range, -47.6% to 38.6%). The average shift required for target coverage was 1.0 cm (maximum, 2.2 cm). With CT-based alignment to the stomach, the average V95% was 98.5% for CTV and 94.9% for PTV; with bony alignment, these values were 94.5% and 90.4%, respectively (P < .01 for CTV and PTV). With bony alignment, the PTV V95% was ≤90% in 4 patients (33%) over the course of treatment and was as low as 72.5% for 1 fraction. The kidney position varied with respect to the stomach and bony anatomy. Consequently, the dose to the left kidney was higher based on daily CT scans than on planning scans. Dose to other organs at risk did not vary significantly. CONCLUSIONS Substantial interfractional variation in stomach volume was observed, despite treatment with breath-hold and restriction of oral intake. Daily CT-IGRT improved target coverage, enabling excellent coverage despite the use of small PTV margins.
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Affiliation(s)
- He Wang
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas
| | - Sarah A Milgrom
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas.
| | - Bouthaina S Dabaja
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas
| | - Grace L Smith
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas
| | - Mary Martel
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas
| | - Chelsea C Pinnix
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas
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16
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Ohkubo Y, Saito Y, Ushijima H, Onishi M, Kazumoto T, Saitoh JI, Kubota N, Kobayashi H, Maseki N, Nishimura Y, Kurosumi M. Radiotherapy for localized gastric mucosa-associated lymphoid tissue lymphoma: long-term outcomes over 10 years. JOURNAL OF RADIATION RESEARCH 2017; 58:537-542. [PMID: 28077625 PMCID: PMC5570133 DOI: 10.1093/jrr/rrw044] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/06/2016] [Indexed: 06/06/2023]
Abstract
This study aimed to assess the long-term outcomes of radiotherapy in patients with localized gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Twenty-seven patients with Stage I gastric MALT lymphoma were treated with radiotherapy from 1999 to 2010. The median age was 65 years (range: 31-84). Fifteen patients were Helicobacter pylori-negative. Thirteen patients were treated with definitive radiotherapy alone. The other 14 patients who had refractory or residual disease following a prior treatment received salvage radiotherapy. The median dose of the radiotherapy was 30 Gy in 20 fractions (range: 30-39.5 Gy). The median follow-up period was 121 months (range: 8-176 months). The 5- and 10-year overall survival rates for all patients were 92% and 87%, respectively. No patients died from MALT lymphoma. Three patients died of other diseases at 8, 33 and 74 months after radiotherapy (myocardial infarction, pneumonia and hepatocellular carcinoma, respectively). No cases of local recurrence were observed during the follow-up period. There were no serious late gastric, liver or kidney complications during a median follow-up period of over 10 years. Two patients remain alive with distant metastases: a lung metastasis and an abdominal lymph node metastasis at 104 months and 21 months after radiotherapy, respectively. Excellent long-term local control was observed in patients with localized gastric MALT lymphoma after radiotherapy. However, lifelong follow-up should be conducted to detect cases of late recurrence, especially distant metastases.
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Affiliation(s)
- Yu Ohkubo
- Department of Radiation Oncology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Yoshihiro Saito
- Department of Radiation Oncology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Hiroki Ushijima
- Department of Radiation Oncology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Masahiro Onishi
- Department of Radiation Oncology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Tomoko Kazumoto
- Department of Radiation Oncology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Jun-ichi Saitoh
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi-shi, Gunma 371-8511, Japan
| | - Nobuko Kubota
- Department of Hematology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Hirofumi Kobayashi
- Department of Hematology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Nobuo Maseki
- Department of Hematology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Yu Nishimura
- Department of Pathology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
| | - Masafumi Kurosumi
- Department of Pathology, Saitama Cancer Center, 780 Komuro, Ina, kita-adachi, Saitama, 362-0806, Japan
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17
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Bae SH, Kim DW, Kim MS, Shin MH, Park HC, Lim DH. Radiotherapy for gastric mucosa-associated lymphoid tissue lymphoma: dosimetric comparison and risk assessment of solid secondary cancer. Radiat Oncol J 2017; 35:78-89. [PMID: 28183161 PMCID: PMC5398345 DOI: 10.3857/roj.2016.01942] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/13/2016] [Accepted: 11/17/2016] [Indexed: 12/17/2022] Open
Abstract
Purpose To determine the optimal radiotherapy technique for gastric mucosa-associated lymphoid tissue lymphoma (MALToma), we compared the dosimetric parameters and the risk of solid secondary cancer from scattered doses among anterior-posterior/posterior-anterior parallel-opposed fields (AP/PA), anterior, posterior, right, and left lateral fields (4_field), 3-dimensional conformal radiotherapy (3D-CRT) using noncoplanar beams, and intensity-modulated radiotherapy composed of 7 coplanar beams (IMRT_co) and 7 coplanar and noncoplanar beams (IMRT_non). Materials and Methods We retrospectively generated 5 planning techniques for 5 patients with gastric MALToma. Homogeneity index (HI), conformity index (CI), and mean doses of the kidney and liver were calculated from the dose-volume histograms. Applied the Biological Effects of Ionizing Radiation VII report to scattered doses, the lifetime attributable risk (LAR) was calculated to estimate the risk of solid secondary cancer. Results The best value of CI was obtained with IMRT, although the HI varied among patients. The mean kidney dose was the highest with AP/PA, followed by 4_field, 3D-CRT, IMRT_co, and IMRT_non. On the other hand, the mean liver dose was the highest with 4_field and the lowest with AP/PA. Compared with 4_field, the LAR for 3D-CRT decreased except the lungs, and the LAR for IMRT_co and IMRT_non increased except the lungs. However, the absolute differences were much lower than <1%. Conclusion Tailored RT techniques seem to be beneficial because it could achieve adjacent organ sparing with very small and clinically irrelevant increase of secondary solid cancer risk compared to the conventional techniques.
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Affiliation(s)
- Sun Hyun Bae
- Department of Radiation Oncology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.,Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong Wook Kim
- Department of Radiation Oncology, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Mi-Sook Kim
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Myung-Hee Shin
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - Hee Chul Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Do Hoon Lim
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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18
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Reinartz G, Weiglein T, Dreyling M, Oertel M. Radiation Therapy in Marginal Zone B-Cell Lymphomas. Radiat Oncol 2017. [DOI: 10.1007/978-3-319-52619-5_24-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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19
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Lim HW, Kim TH, Choi IJ, Kim CG, Lee JY, Cho SJ, Eom HS, Moon SH, Kim DY. Radiation therapy for gastric mucosa-associated lymphoid tissue lymphoma: dose-volumetric analysis and its clinical implications. Radiat Oncol J 2016; 34:193-201. [PMID: 27730803 PMCID: PMC5066445 DOI: 10.3857/roj.2016.01865] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 07/27/2016] [Accepted: 08/04/2016] [Indexed: 12/29/2022] Open
Abstract
Purpose To assess the clinical outcomes of radiotherapy (RT) using two-dimensional (2D) and three-dimensional conformal RT (3D-CRT) for patients with gastric mucosa-associated lymphoid tissue (MALT) lymphoma to evaluate the effectiveness of involved field RT with moderate-dose and to evaluate the benefit of 3D-CRT comparing with 2D-RT. Materials and Methods Between July 2003 and March 2015, 33 patients with stage IE and IIE gastric MALT lymphoma received RT were analyzed. Of 33 patients, 17 patients (51.5%) were Helicobacter pylori (HP) negative and 16 patients (48.5%) were HP positive but refractory to HP eradication (HPE). The 2D-RT (n = 14) and 3D-CRT (n = 19) were performed and total dose was 30.6 Gy/17 fractions. Of 11 patients who RT planning data were available, dose-volumetric parameters between 2D-RT and 3D-CRT plans was compared. Results All patients reached complete remission (CR) eventually and median time to CR was 3 months (range, 1 to 15 months). No local relapse occurred and one patient died with second primary malignancy. Tumor response, survival, and toxicity were not significantly different between 2D-RT and 3D-CRT (p > 0.05, each). In analysis for dose-volumetric parameters, Dmax and CI for PTV were significantly lower in 3D-CRT plans than 2D-RT plans (p < 0.05, each) and Dmean and V15 for right kidney and Dmean for left kidney were significantly lower in 3D-CRT than 2D-RT (p < 0.05, each). Conclusion Our data suggested that involved field RT with moderate-dose for gastric MALT lymphoma could be promising and 3D-CRT could be considered to improve the target coverage and reduce radiation dose to the both kidneys.
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Affiliation(s)
- Hyeon Woo Lim
- Proton Therapy Center, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Tae Hyun Kim
- Proton Therapy Center, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Il Ju Choi
- Center for Gastric Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Chan Gyoo Kim
- Center for Gastric Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Jong Yeul Lee
- Center for Gastric Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Soo Jeong Cho
- Center for Gastric Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Hyeon Seok Eom
- Center for Specific Organs Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Sung Ho Moon
- Proton Therapy Center, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Dae Yong Kim
- Proton Therapy Center, Research Institute and Hospital, National Cancer Center, Goyang, Korea
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20
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Quéro L, Hennequin C, Amorim S, Guillerm S, Ruskoné-Fourmestraux A, Thieblemont C. [Radiotherapy for localized gastric and orbital MALT lymphomas]. Cancer Radiother 2016; 20:543-6. [PMID: 27614509 DOI: 10.1016/j.canrad.2016.07.089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 07/19/2016] [Accepted: 07/22/2016] [Indexed: 12/31/2022]
Abstract
Primary gastric and orbital MALT lymphomas are both low grade (indolent) B-cell non-Hodgkin's lymphomas. Traditionally, these tumors are radiosensitive and have a good prognosis. In localized orbital and stages IE-IIE gastric MALT lymphomas without Helicobacter pylori infection or in case of persistent H. pylori infection after eradication therapy, several retrospective studies have shown that radiotherapy was an effective and well-tolerated treatment.
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Affiliation(s)
- L Quéro
- Service de cancérologie-radiothérapie, hôpital Saint-Louis, AP-HP, 1, avenue Claude-Vellefaux, 75010 Paris, France.
| | - C Hennequin
- Service de cancérologie-radiothérapie, hôpital Saint-Louis, AP-HP, 1, avenue Claude-Vellefaux, 75010 Paris, France
| | - S Amorim
- Service d'hémato-oncologie, hôpital Saint-Louis, AP-HP, 1, avenue Claude-Vellefaux, 75010 Paris, France
| | - S Guillerm
- Service de cancérologie-radiothérapie, hôpital Saint-Louis, AP-HP, 1, avenue Claude-Vellefaux, 75010 Paris, France
| | - A Ruskoné-Fourmestraux
- Service de gastroentérologie, hôpital Saint-Antoine, AP-HP, 184, rue du Faubourg-Saint-Antoine, 75012 Paris, France
| | - C Thieblemont
- Service d'hémato-oncologie, hôpital Saint-Louis, AP-HP, 1, avenue Claude-Vellefaux, 75010 Paris, France
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Liu X, Fang H, Tian Y, Wang WH, Song YW, Wang SL, Liu YP, He XH, Dong M, Ren H, Jin J, Li YX. Intensity Modulated Radiation Therapy for Early-Stage Primary Gastric Diffuse Large B-Cell Lymphoma: Dosimetric Analysis, Clinical Outcome, and Quality of Life. Int J Radiat Oncol Biol Phys 2016; 95:712-20. [DOI: 10.1016/j.ijrobp.2016.01.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 01/12/2016] [Accepted: 01/18/2016] [Indexed: 11/29/2022]
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22
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4D-Listmode-PET-CT and 4D-CT for optimizing PTV margins in gastric lymphoma : Determination of intra- and interfractional gastric motion. Strahlenther Onkol 2016; 192:322-32. [PMID: 26902523 DOI: 10.1007/s00066-016-0949-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 01/26/2016] [Indexed: 12/13/2022]
Abstract
PURPOSE New imaging protocols for radiotherapy in localized gastric lymphoma were evaluated to optimize planning target volume (PTV) margin and determine intra-/interfractional variation of the stomach. METHODS Imaging of 6 patients was explored prospectively. Intensity-modulated radiotherapy (IMRT) planning was based on 4D/3D imaging of computed tomography (CT) and positron-emission tomography (PET)-CT. Static and motion gross tumor volume (sGTV and mGTV, respectively) were distinguished by defining GTV (empty stomach), clinical target volume (CTV = GTV + 5 mm margin), PTV (GTV + 10/15/20/25 mm margins) plus paraaortic lymph nodes and proximal duodenum. Overlap of 4D-Listmode-PET-based mCTV with 3D-CT-based PTV (increasing margins) and V95/D95 of mCTV were evaluated. Gastric shifts were determined using online cone-beam CT. Dose contribution to organs at risk was assessed. RESULTS The 4D data demonstrate considerable intra-/interfractional variation of the stomach, especially along the vertical axis. Conventional 3D-CT planning utilizing advancing PTV margins of 10/15/20/25 mm resulted in rising dose coverage of mCTV (4D-Listmode-PET-Summation-CT) and rising D95 and V95 of mCTV. A PTV margin of 15 mm was adequate in 3 of 6 patients, a PTV margin of 20 mm was adequate in 4 of 6 patients, and a PTV margin of 25 mm was adequate in 5 of 6 patients. CONCLUSION IMRT planning based on 4D-PET-CT/4D-CT together with online cone-beam CT is advisable to individualize the PTV margin and optimize target coverage in gastric lymphoma.
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Yahalom J, Illidge T, Specht L, Hoppe RT, Li YX, Tsang R, Wirth A. Modern radiation therapy for extranodal lymphomas: field and dose guidelines from the International Lymphoma Radiation Oncology Group. Int J Radiat Oncol Biol Phys 2015; 92:11-31. [PMID: 25863750 DOI: 10.1016/j.ijrobp.2015.01.009] [Citation(s) in RCA: 254] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 12/14/2015] [Accepted: 01/10/2015] [Indexed: 12/11/2022]
Abstract
Extranodal lymphomas (ENLs) comprise about a third of all non-Hodgkin lymphomas (NHL). Radiation therapy (RT) is frequently used as either primary therapy (particularly for indolent ENL), consolidation after systemic therapy, salvage treatment, or palliation. The wide range of presentations of ENL, involving any organ in the body and the spectrum of histological sub-types, poses a challenge both for routine clinical care and for the conduct of prospective and retrospective studies. This has led to uncertainty and lack of consistency in RT approaches between centers and clinicians. Thus far there is a lack of guidelines for the use of RT in the management of ENL. This report presents an effort by the International Lymphoma Radiation Oncology Group (ILROG) to harmonize and standardize the principles of treatment of ENL, and to address the technical challenges of simulation, volume definition and treatment planning for the most frequently involved organs. Specifically, detailed recommendations for RT volumes are provided. We have applied the same modern principles of involved site radiation therapy as previously developed and published as guidelines for Hodgkin lymphoma and nodal NHL. We have adopted RT volume definitions based on the International Commission on Radiation Units and Measurements (ICRU), as has been widely adopted by the field of radiation oncology for solid tumors. Organ-specific recommendations take into account histological subtype, anatomy, the treatment intent, and other treatment modalities that may be have been used before RT.
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Affiliation(s)
- Joachim Yahalom
- Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York.
| | - Tim Illidge
- Institute of Cancer Sciences, University of Manchester, Manchester Academic Health Sciences Centre, The Christie National Health Service Foundation Trust, Manchester, United Kingdom
| | - Lena Specht
- Department of Oncology and Hematology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Richard T Hoppe
- Department of Radiation Oncology, Stanford University, Palo Alto, California
| | - Ye-Xiong Li
- Department of Radiation Oncology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Richard Tsang
- Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Andrew Wirth
- Division of Radiation Oncology, Peter MacCallum Cancer Institute, St. Andrews Place, East Melbourne, Australia
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24
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Inaba K, Okamoto H, Wakita A, Nakamura S, Kobayashi K, Harada K, Kitaguchi M, Sekii S, Takahashi K, Yoshio K, Murakami N, Morota M, Ito Y, Sumi M, Uno T, Itami J. Radiotherapy for gastric lymphoma: a planning study of 3D conformal radiotherapy, the half-beam method, and intensity-modulated radiotherapy. JOURNAL OF RADIATION RESEARCH 2014; 55:1141-1145. [PMID: 25161174 PMCID: PMC4229917 DOI: 10.1093/jrr/rru052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 05/14/2014] [Accepted: 05/22/2014] [Indexed: 06/03/2023]
Abstract
During radiotherapy for gastric lymphoma, it is difficult to protect the liver and kidneys in cases where there is considerable overlap between these organs and the target volume. This study was conducted to compare the three radiotherapy planning techniques of four-fields 3D conformal radiotherapy (3DCRT), half-field radiotherapy (the half-beam method) and intensity-modulated radiotherapy (IMRT) used to treat primary gastric lymphoma in which the planning target volume (PTV) had a large overlap with the left kidney. A total of 17 patients with gastric diffuse large B-cell lymphoma (DLBCL) were included. In DLBCL, immunochemotherapy (Rituximab + CHOP) was followed by radiotherapy of 40 Gy to the whole stomach and peri-gastric lymph nodes. 3DCRT, the half-field method, and IMRT were compared with respect to the dose-volume histogram (DVH) parameters and generalized equivalent uniform dose (gEUD) to the kidneys, liver and PTV. The mean dose and gEUD for 3DCRT was higher than for IMRT and the half-beam method in the left kidney and both kidneys. The mean dose and gEUD of the left kidney was 2117 cGy and 2224 cGy for 3DCRT, 1520 cGy and 1637 cGy for IMRT, and 1100 cGy and 1357 cGy for the half-beam method, respectively. The mean dose and gEUD of both kidneys was 1335 cGy and 1559 cGy for 3DCRT, 1184 cGy and 1311 cGy for IMRT, and 700 cGy and 937 cGy for the half-beam method, respectively. Dose-volume histograms (DVHs) of the liver revealed a larger volume was irradiated in the dose range <25 Gy with 3DCRT, while the half-beam method irradiated a larger volume of liver with the higher dose range (>25 Gy). IMRT and the half-beam method had the advantages of dose reduction for the kidneys and liver.
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MESH Headings
- Antibodies, Monoclonal, Murine-Derived/therapeutic use
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Combined Modality Therapy
- Cyclophosphamide/therapeutic use
- Doxorubicin/therapeutic use
- Humans
- Kidney/radiation effects
- Liver/radiation effects
- Lymphoma, Large B-Cell, Diffuse/radiotherapy
- Lymphoma, Large B-Cell, Diffuse/therapy
- Organs at Risk/radiation effects
- Prednisone/therapeutic use
- Radiotherapy Planning, Computer-Assisted/methods
- Radiotherapy, Conformal/adverse effects
- Radiotherapy, Conformal/methods
- Radiotherapy, Intensity-Modulated/adverse effects
- Radiotherapy, Intensity-Modulated/methods
- Rituximab
- Stomach Neoplasms/radiotherapy
- Stomach Neoplasms/therapy
- Vincristine/therapeutic use
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Affiliation(s)
- Koji Inaba
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Hiroyuki Okamoto
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Akihisa Wakita
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Satoshi Nakamura
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Kazuma Kobayashi
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Ken Harada
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Mayuka Kitaguchi
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Shuhei Sekii
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Kana Takahashi
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Kotaro Yoshio
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Naoya Murakami
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Madoka Morota
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Yoshinori Ito
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Minako Sumi
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Takashi Uno
- Diagnostic Radiology and Radiation Oncology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba 260-8670, Japan
| | - Jun Itami
- Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
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Kim SW, Lim DH, Ahn YC, Kim WS, Kim SJ, Ko YH, Kim KM. Clinical outcomes of radiation therapy for early-stage gastric mucosa-associated lymphoid tissue lymphoma. World J Gastroenterol 2013; 19:6062-6068. [PMID: 24106407 PMCID: PMC3785628 DOI: 10.3748/wjg.v19.i36.6062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 06/26/2013] [Accepted: 07/19/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the clinical outcomes of radiation therapy (RT) for early-stage gastric mucosa-associated lymphoid tissue lymphoma (MALToma).
METHODS: The records of 64 patients treated between 1998 and 2011 were analyzed retrospectively. For Helicobacter pylori (H. pylori)-positive patients (n = 31), chemotherapy or H. pylori eradication therapy was the initial treatment. In patients with failure after H. pylori eradication, RT was performed. For H. pylori-negative patients (n = 33), chemotherapy or RT was the first-line treatment. The median RT dose was 36 Gy. The target volume included the entire stomach and the perigastric lymph node area.
RESULTS: All of the patients completed RT without interruption and showed complete remission on endoscopic biopsy after treatment. Over a median follow-up period of 39 mo, the 5-year local control rate was 89%. Salvage therapy was successful in all relapsed patients. Secondary malignancies developed in three patients. The 5-year overall survival rate was 94%. No patient presented symptoms of moderate-to-severe treatment-related toxicities during or after RT.
CONCLUSION: Radiotherapy results in favorable clinical outcomes in patients with early-stage gastric MALToma who experience failure of H. pylori eradication therapy and those who are H. pylori negative.
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26
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Wirth A, Gospodarowicz M, Aleman B, Bressel M, Ng A, Chao M, Hoppe R, Thieblemont C, Tsang R, Moser L, Specht L, Szpytma T, Lennard A, Seymour J, Zucca E. Long-term outcome for gastric marginal zone lymphoma treated with radiotherapy: a retrospective, multi-centre, International Extranodal Lymphoma Study Group study. Ann Oncol 2013; 24:1344-51. [DOI: 10.1093/annonc/mds623] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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27
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Tanaka H, Hayashi S, Ohtakara K, Hoshi H. Hepatic dysfunction after radiotherapy for primary gastric lymphoma. JOURNAL OF RADIATION RESEARCH 2013; 54:92-7. [PMID: 23283868 PMCID: PMC3534266 DOI: 10.1093/jrr/rrs062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Patients with primary gastric lymphoma (PGL) are often treated with three-dimensional conformal radiotherapy (3D-CRT) in three to four fields to reduce the dose to the left kidney. However, the liver dose is higher than conventional parallel-opposed fields. This study was designed to evaluate hepatic dysfunction after 3D-CRT in patients with PGL. The data of 20 PGL patients treated with 3D-CRT were analyzed. Of the 20 patients, 3 had mucosa-associated lymphoid tissue (MALT) lymphoma and 17 had diffuse large B-cell lymphoma (DLBCL). The median dose used to treat MALT lymphoma was 30 Gy and 40 Gy for DLBCL. Pretreatment and post-treatment transaminase and alkaline phosphatase (ALP) values were compared. Radiation-induced hepatic dysfunction (RIHD) was defined as a more than 2-fold increase in transaminase or ALP levels, exceeding the upper limit within 4 months of the completion of radiotherapy. Increased transaminase or ALP levels were observed in 19 patients (95%). RIHD was observed in 14 patients (70%). The transaminase and ALP values were significantly different between pretreatment and post-treatment. There were significant differences in liver volumes receiving ≥5, ≥10, ≥15 and ≥20 Gy (V5, V10, V15 and V20) and in the mean liver doses between patients with and without RIHD. For patients with V10 > 60%, V15 > 50% or V20 > 30% in particular, the incidence rates of RIHD were significantly high. After radiotherapy for PGL, hepatic dysfunction occurred at a high rate. Thus, radiotherapy treatment should be planned in order to reduce liver doses.
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Affiliation(s)
- Hidekazu Tanaka
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu 501-1194, Japan.
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28
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Specht L. Radiotherapy Studies and Extra-nodal Non-Hodgkin Lymphomas, Progress and Challenges. Clin Oncol (R Coll Radiol) 2012; 24:313-8. [DOI: 10.1016/j.clon.2012.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Revised: 02/06/2012] [Accepted: 02/24/2012] [Indexed: 12/14/2022]
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29
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Kohisa J, Kamimura K, Iwanaga A, Shioji K, Kawai H, Suda T, Suzuki K, Sakurada J, Naito M, Aoyagi Y. Efficient palliative involved-field radiotherapy on highly progressive diffuse large B-cell primary gastric lymphoma with liver cirrhosis. Clin J Gastroenterol 2012; 5:164-9. [PMID: 26182162 DOI: 10.1007/s12328-012-0292-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Accepted: 02/20/2012] [Indexed: 02/07/2023]
Abstract
We report the case of a 73-year-old woman having diffuse large B-cell primary gastric lymphoma with a cirrhotic liver caused by hepatitis C virus infection. She visited our hospital with symptoms of nausea and vomiting, which appeared to be caused by stenosis due to the tumor. Metastatic tumors were seen in the gastric and jugular lymph nodes. The clinical stage was IVB with a high risk of poor prognosis according to the international index. Because of poor hepatic reserve function, standard chemotherapy could not be administered. To maintain her quality of life, palliative involved-field radiotherapy was performed. The symptoms and tumor markers significantly improved, and computed tomography and endoscopy indicated the disappearance of the primary gastric tumor. Two months after radiotherapy and her return home, she died of pneumonia. Autopsy showed neither lymphoma cells nor stenosis of gastric lesion. The significant anti-tumor effect on primary tumor in our case suggests that the involved-field radiotherapy, although palliative, can be a therapeutic option for primary gastric lymphoma patients with various complications.
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Affiliation(s)
- Junji Kohisa
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Kenya Kamimura
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan.
| | - Akito Iwanaga
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Kazuhiko Shioji
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Hirokazu Kawai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Takeshi Suda
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Kenji Suzuki
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Junko Sakurada
- Division of Cellular and Molecular Pathology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Makoto Naito
- Division of Cellular and Molecular Pathology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
| | - Yutaka Aoyagi
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata, 951-8122, Japan
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30
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Matoba M, Oota K, Toyoda I, Kitadate M, Watanabe N, Tonami H. Usefulness of 4D-CT for radiation treatment planning of gastric MZBCL/MALT. JOURNAL OF RADIATION RESEARCH 2012; 53:333-337. [PMID: 22446166 DOI: 10.1269/jrr.11127] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
It is well known that significant variations in stomach size, shape, and respiratory motion lead to uncertainties in target localization during treatment for gastric lymphoma. In this study, the usefulness of 4D-CT for radiation planning of gastric MZBCL/MALT was evaluated. Treatment planning using 4DCT (plan A) and conventional planning with a uniform margin (plan B) were compared using dose volume histograms (DVH) of the planning target volume (PTV) and the organ at risk, as well as the dose coverage of the clinical target volume (CTV) assessed by weekly online cone beam CT (CBCT) during the treatment course. In addition, regarding the image quality of CBCT , the interobserver agreement for the delineated volume of the CTV on CBCT was analyzed. The mean PTV of plan A was significantly smaller than that of plan B (p = 0.008). The mean doses to the liver and heart in plan A were significantly lower than those in plan B (p = 0.02 and 0.03, respectively). The reductions of V(20) of each kidney in plan A compared with those in plan B were 4.8 ± 2.4% in the right kidney and 16.3 ± 10.4% in the left. There was no significant difference in the dose coverage of the CTV between the plans during the treatment course. The interobserver agreement for the volume of the CTV was moderate correlation. Treatment planning using 4DCT for gastric MZBCL/MALT was useful for effective and safe irradiation with minimizing exposure of the organ at risk.
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Affiliation(s)
- Munetaka Matoba
- Department of Radiology, Kanazawa Medical University, Kahoku, Ishikawa 920-0293, Japan.
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31
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Lymphomas of the upper GI tract: the role of radiotherapy. Clin Oncol (R Coll Radiol) 2012; 24:352-7. [PMID: 22386892 DOI: 10.1016/j.clon.2012.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 02/02/2012] [Indexed: 12/31/2022]
Abstract
The most common site of extra-nodal non-Hodgkin's lymphoma (NHL) is the gastrointestinal tract, of which the stomach is the most common site. With the exception of extra-nodal marginal zone lymphoma of gastric mucosa-associated lymphoid tissue (MALT), where excellent long term results can be achieved by radiotherapy, the published literature lacks high quality studies evaluating the role, optimal dose and technique of such treatment in the management of gastro-intestinal lymphoma. Non-randomised studies support organ preservation and a role for local radiotherapy in gastric lymphoma.
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32
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Johnson ME, Pereira GC, El Naqa IM, Goddu SM, Al-Lozi R, Apte A, Mansur DB. Determination of planning target volume for whole stomach irradiation using daily megavoltage computed tomographic images. Pract Radiat Oncol 2012; 2:e85-e88. [PMID: 24674190 DOI: 10.1016/j.prro.2012.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 01/05/2012] [Accepted: 02/02/2012] [Indexed: 11/28/2022]
Abstract
PURPOSE Whole stomach radiation therapy is often used in the management of gastric lymphoma. However, very limited data exist with regard to planning target volume requirements for the whole stomach. This study retrospectively analyzed daily megavoltage computed tomographic (CT) scans of gastric lymphoma patients in order to help determine the interfraction variation of the stomach position. METHODS AND MATERIALS Forty-one daily megavoltage CT images from 3 gastric lymphoma patients were used for stomach contouring. Each patient's megavoltage CT images were rigidly registered to their CT simulation data sets, and the margin in each direction that covered at least 95% of the daily stomach volumes was computed using a simple grid search. Patient setup variation was also calculated from the daily patient shifts. The organ motion margin was then added to the setup margin to render the total margin. RESULTS A uniform margin of 2.2 cm is required to cover 95% of the stomach over the treatment course. However, direction-specific margins were observed from 1.72, 1.88, 0.92, 2.23, 1.90, and 0.86 cm for the right, left, posterior, anterior, superior, and inferior directions, respectively. CONCLUSIONS The results of this study provide helpful 3-dimensional volumetric information to the limited existing data on margin requirements for whole stomach radiation therapy.
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Affiliation(s)
- Matthew E Johnson
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | - Gisele C Pereira
- Department of Radiation Oncology and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri
| | - Issam M El Naqa
- Medical Physics Unit, Montreal General Hospital, McGill University, Montreal, QC, Canada
| | - S Murty Goddu
- Department of Radiation Oncology and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri
| | - Rawan Al-Lozi
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
| | - Aditya Apte
- Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - David B Mansur
- Department of Radiation Oncology and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri.
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Stathis A, Bertoni F, Zucca E. Treatment of gastric marginal zone lymphoma of MALT type. Expert Opin Pharmacother 2011; 11:2141-52. [PMID: 20586708 DOI: 10.1517/14656566.2010.497141] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
IMPORTANCE OF THE FIELD Gastric marginal zone lymphomas of mucosa-associated lymphoid tissue (MALT type) represent approximately half of all cases of lymphomas arising in the stomach. They have been strongly associated with chronic Helicobacter pylori (H. pylori) gastritis. Treatment aimed at eradicating this infection results in lymphoma remissions in the majority of patients (approximately 80%) and this represents a unique case of anticancer treatment based on the eradication of the causing factor. AREAS COVERED IN THIS REVIEW The effects of H. pylori eradication in suppressing the growth of this lymphoma with particular emphasis on the long-term disease control results are presented in this review. Trials of different treatment modalities for patients not responding to antibiotics are also covered. WHAT THE READER WILL GAIN Understanding of the effects of H. pylori eradication on suppressing the growth of gastric MALT lymphoma. Readers will learn how to distinguish between clinical, histological and molecular remission of the lymphoma and will learn alternative treatments for patients with H. pylori-negative disease and for cases not responding to eradication. TAKE HOME MESSAGE Gastric MALT lymphoma has an indolent course and most patients can achieve durable disease control after only anti-H. pylori therapy. For patients not responding to antibiotics, randomized trials are needed to define the best treatment modality.
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Affiliation(s)
- Anastasios Stathis
- Oncology Institute of Southern Switzerland - IOSI, Ospedale San Giovanni, CH-6500 Bellinzona, Switzerland
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34
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Evaluation of dose coverage to target volume and normal tissue sparing in the adjuvant radiotherapy of gastric cancers: 3D-CRT compared with dynamic IMRT. Biomed Imaging Interv J 2010; 6:e29. [PMID: 21611046 PMCID: PMC3097777 DOI: 10.2349/biij.6.3.e29] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 02/20/2010] [Accepted: 04/20/2010] [Indexed: 12/20/2022] Open
Abstract
Purpose: To assess the potential advantage of intensity-modulated radiotherapy (IMRT) over 3D-conformal radiotherapy (3D-CRT) planning in postoperative adjuvant radiotherapy for patients with gastric carcinoma. Methods and materials: In a retrospective study, for plan comparison, dose distribution was recalculated in 15 patients treated with 3D-CRT on the contoured structures of same CT images using an IMRT technique. 3D-conformal plans with three fields and four-fields were compared with seven-field dynamic IMRT plans. The different plans were compared by analyzing the dose coverage of planning target volume using TV95, Dmean, uniformity index, conformity index and homogeneity index parameters. To assess critical organ sparing, Dmean, Dmax, dose to one-third and two-third volumes of the OARs and percentage of volumes receiving more than their tolerance doses were compared. Results: The average dose coverage values of PTV with 3F-CRT and 4F-CRT plans were comparable, where as IMRT plans achieved better target coverage(p<0.001) with higher conformity index value of 0.81±0.07 compared to both the 3D-CRT plans. The doses to the liver and bowel reduced significantly (p<0.001) with IMRT plans compared to other 3D-CRT plans. For all OARs the percentage of volumes receiving more than their tolerance doses were reduced with the IMRT plans. Conclusion: This study showed that a better target coverage and significant dose reduction to OARs could be achieved with the IMRT plans. The IMRT can be preferred with caution for organ motion. The authors are currently studying organ motion in the upper abdomen to use IMRT for patient treatment.
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Aleman BMP, Haas RLM, van der Maazen RWM. Role of radiotherapy in the treatment of lymphomas of the gastrointestinal tract. Best Pract Res Clin Gastroenterol 2010; 24:27-34. [PMID: 20206106 DOI: 10.1016/j.bpg.2009.12.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Accepted: 12/21/2009] [Indexed: 01/31/2023]
Abstract
In patients with gastrointestinal lymphoma the most frequently involved site is the stomach (60%-75% of cases), followed by the small bowel, ileum, cecum, colon and rectum. The most common histological subtypes are extranodal marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT) and diffuse large B-cell lymphoma (DLBCL). The role of radiotherapy is most definite in early stage gastric lymphoma. The therapeutic approach for patients with gastric Non Hodgkin lymphoma (NHL) has changed significantly over the last decades. The primary treatment of limited gastric MALT lymphoma consists of Helicobacter pylori eradication. In case of insufficient response to H. pylori eradication or in case H. pylori is absent, irradiation of the stomach and perigastric lymph nodes to a dose of 30-40Gy in 15-20 fractions is indicated. In patients with gastric DLBCL conservative treatment with anthracycline-based chemotherapy alone or in combination with involved-field radiotherapy has become the therapy of choice.
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Affiliation(s)
- Berthe M P Aleman
- Department of Radiotherapy, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
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Dahele M, Skinner M, Schultz B, Cardoso M, Bell C, Ung YC. Adjuvant radiotherapy for gastric cancer: A dosimetric comparison of 3-dimensional conformal radiotherapy, tomotherapy and conventional intensity modulated radiotherapy treatment plans. Med Dosim 2009; 35:115-21. [PMID: 19931023 DOI: 10.1016/j.meddos.2009.03.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2009] [Revised: 03/10/2009] [Accepted: 03/10/2009] [Indexed: 11/29/2022]
Abstract
Some patients with gastric cancer benefit from post-operative chemo-radiotherapy, but adequately irradiating the planning target volume (PTV) whilst avoiding organs at risk (OAR) can be difficult. We evaluate 3-dimensional conformal radiotherapy (CRT), conventional intensity-modulated radiotherapy (IMRT) and helical tomotherapy (TT). TT, 2 and 5-field (F) CRT and IMRT treatment plans with the same PTV coverage were generated for 5 patients and compared. Median values are reported. The volume of left/right kidney receiving at least 20Gy (V20) was 57/51% and 51/60% for 2 and 5F-CRT, and 28/14% for TT and 27/19% for IMRT. The volume of liver receiving at least 30Gy (V30) was 45% and 62% for 2 and 5F-CRT, and 37% for TT and 35% for IMRT. With TT, 98% of the PTV received 95-105% of the prescribed dose, compared with 45%, 34% and 28% for 2F-CRT, 5F-CRT and IMRT respectively. Using conventional metrics, conventional IMRT can achieve comparable PTV coverage and OAR sparing to TT, but at the expense of PTV dose heterogeneity. Both irradiate large volumes of normal tissue to low doses. Additional studies are needed to demonstrate the clinical impact of these technologies.
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Affiliation(s)
- Max Dahele
- Department of Radiation Oncology, Odette Cancer Centre, Toronto, Ontario, Canada
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Wirth A. The rationale and role of radiation therapy in the treatment of patients with diffuse large B-cell lymphoma in the Rituximab era. Leuk Lymphoma 2008; 48:2121-36. [PMID: 17990176 DOI: 10.1080/10428190701636468] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Developments in the evaluation and systemic management of diffuse large B-cell lymphoma (DLBCL) require ongoing assessment of the role of external beam radiotherapy in management. This review assesses data regarding the use of radiotherapy in the initial management of early stage and advanced DLBCL, and considers the implications of bulky and residual disease, and the contribution of PET scanning, to decisions regarding the use of radiotherapy after chemotherapy. Limited R-CHOP plus radiotherapy, or full dose R-CHOP alone, are both likely to cure approximately 90% of patients with low risk early stage disease. The choice of therapy will depend on considerations of acute and late toxicity of the two approaches, taking into account individual patient risk profiles and preferences. Unfavorable early-stage and advanced-stage disease require treatment with full dose R-CHOP. The presence of bulky disease predicts for a higher risk of relapse, which may be partly ameliorated by the addition of radiotherapy. The rapidity of response on PET scanning, the presence of a posttherapy residual mass, the potential toxicity of radiotherapy and the available salvage options all need to be considered on a patient by patient basis, when considering the use of radiotherapy for advanced disease.
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Affiliation(s)
- Andrew Wirth
- Peter MacCallum Cancer Centre, St Andrew's Place, East Melbourne, Victoria, Australia.
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van der Geld YG, Senan S, van Sörnsen de Koste JR, Verbakel WFAR, Slotman BJ, Lagerwaard FJ. A Four-Dimensional CT-Based Evaluation of Techniques for Gastric Irradiation. Int J Radiat Oncol Biol Phys 2007; 69:903-9. [PMID: 17889271 DOI: 10.1016/j.ijrobp.2007.06.062] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2007] [Revised: 05/29/2007] [Accepted: 06/05/2007] [Indexed: 11/25/2022]
Abstract
PURPOSE To evaluate three-dimensional conformal (3D-CRT), intensity-modulated (IMRT) and respiration-gated radiotherapy (RGRT) techniques for gastric irradiation for target coverage and minimization of renal doses. All techniques were four-dimensional (4D)-CT based, incorporating the intrafractional mobility of the target volume and organs at risk (OAR). METHODS AND MATERIALS The stomach, duodenal C-loop, and OAR (kidneys, liver, and heart) were contoured in all 10 phases of planning 4D-CT scans for five patients who underwent abdominal radiotherapy. Planning target volumes (PTVs) encompassing all positions of the stomach (PTV(all phases)) were generated. Three respiratory phases for RGRT in inspiration and expiration were identified, and corresponding PTV(inspiration) and PTV(expiration) and OAR volumes were created. Landmark-based fields recommended for the Radiation Therapy Oncology Group (RTOG) 99-04 study protocol were simulated to assess PTV coverage. IMRT and 3D-CRT planning with and without additional RGRT planning were performed for all PTVs, and corresponding dose volume histograms were analyzed. RESULTS Use of landmark-based fields did not result in full geometric coverage of the PTV(all phases) in any patient. IMRT significantly reduced mean renal doses compared with 3D-CRT (15.0 Gy +/- 0.9 Gy vs. 20.1 Gy +/- 9.3 Gy and 16.6 Gy +/- 1.5 Gy vs. 32.6 Gy +/- 7.1 Gy for the left and right kidneys, respectively; p = 0.04). No significant increase in renal sparing was seen when adding RGRT to either 3D-CRT or IMRT. Tolerance doses to the other OAR were not exceeded. CONCLUSIONS Individualized field margins are essential for gastric irradiation. IMRT plans significantly reduce renal doses, but the benefits of RGRT in gastric irradiation appear to be limited.
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Affiliation(s)
- Ylanga G van der Geld
- Department of Radiation Oncology, VU University Medical Center, Amsterdam, The Netherlands
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Wang N, Fu Q, Wang YJ. Advances on the treatment of gastric mucosa-associated lymphoid tissue lymphoma. Shijie Huaren Xiaohua Zazhi 2007; 15:860-868. [DOI: 10.11569/wcjd.v15.i8.860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Gastric mucosa-associated lymphoid tissue (MALT) lymphomas are rare in the gut, and its occurrence rate was 1% to 5% of the malignant tumors. In histological type, most of them are non-Hodgin's lymphomas, while Hodgin's lymphomas are seldom seen. There have been a lot of controversies on the optimal treatments of gastric MALT lymphomas for a long time. Surgery was traditionally considered as the most important approach to cure the disease. However, anti-H. pylori therapy has been regarded as an alternative method since H. pylori infection was found to be relevant with the pathogenesis of gastric MALT lymphomas. In this article, we reviewed the current status and recent advances on the treatment of this disease.
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Ferreri AJM, Montalbán C. Primary diffuse large B-cell lymphoma of the stomach. Crit Rev Oncol Hematol 2007; 63:65-71. [PMID: 17339119 DOI: 10.1016/j.critrevonc.2007.01.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2006] [Revised: 01/17/2007] [Accepted: 01/17/2007] [Indexed: 01/08/2023] Open
Abstract
The stomach is the extranodal site most commonly involved by non-Hodgkin lymphomas. Diffuse large B-cell lymphoma is the most common histotype category arising in this organ. This is an aggressive lymphoma usually presenting as limited disease, being associated or not to Helicobacter pylori infection and mucosa-associated lymphoid tissue-type areas. Histopathological characteristics are similar to those reported for other diffuse large B-cell lymphomas. It occurs more frequently in males with a median age ranging between 50 and 60 years. With an adequate therapeutic strategy, its prognosis is good, with a 5-year overall survival near to 90%. Conservative treatment with anthracycline-containing chemotherapy, followed or not by involved-field radiotherapy has replaced gastrectomy as standard approach against this malignancy. Several questions on the best treatment remain unanswered. Among others, the role of rituximab, consolidation radiotherapy as well as of more conservative approaches like H. pylori-eradicating antibiotic therapy should be better defined.
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MESH Headings
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Murine-Derived
- Antineoplastic Agents/administration & dosage
- Antineoplastic Agents/therapeutic use
- Female
- Helicobacter Infections/complications
- Helicobacter Infections/drug therapy
- Helicobacter pylori/pathogenicity
- Humans
- Lymphoma, B-Cell/drug therapy
- Lymphoma, B-Cell/pathology
- Lymphoma, B-Cell/radiotherapy
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/pathology
- Lymphoma, Large B-Cell, Diffuse/radiotherapy
- Male
- Middle Aged
- Neoplasm Staging
- Prognosis
- Rituximab
- Sex Factors
- Stomach Neoplasms/drug therapy
- Stomach Neoplasms/pathology
- Stomach Neoplasms/radiotherapy
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Vuong T, Kopek N, Ducruet T, Portelance L, Faria S, Bahoric B, Devic S. Conformal therapy improves the therapeutic index of patients with anal canal cancer treated with combined chemotherapy and external beam radiotherapy. Int J Radiat Oncol Biol Phys 2007; 67:1394-400. [PMID: 17276620 DOI: 10.1016/j.ijrobp.2006.11.038] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2006] [Revised: 11/02/2006] [Accepted: 11/13/2006] [Indexed: 11/15/2022]
Abstract
PURPOSE To evaluate the clinical outcomes of three-dimensional conformal radiotherapy (3D-CRT) in patients with anal canal cancer, in terms of local control (LC), freedom from relapse (FFR), and overall survival (OS) rates, and to estimate long-term toxicity data. METHODS AND MATERIALS Sixty historical patients, treated with conventional radiation techniques (C-RT), were used as controls, and 62 consecutive patients were treated with 3D-CRT. Patients treated with 3D-CRT received 54 Gy in 30 fractions delivered continuously, compared with 45-58.9 Gy (median dose, 54 Gy) in a split course in patients treated with C-RT. Chemotherapy consisted of 5-fluorouracil with either mitomycin-C or cis-platinum given concurrently with radiation. Survival curves were performed using the Kaplan-Meier model, and the Cox proportional hazards model was used for multivariate analysis of risk factors. RESULTS No differences in stage and age distribution were observed between the two groups. Patients treated with 3D-CRT and C-RT had an actuarial 5-year LC rate of 85.1% and 61.1%, respectively (p = 0.0056); the FFR rate was 70.2% and 46.1% (p = 0.0166), and the OS rate was 80.7% and 53.9% (p = 0.0171). In multivariate analysis, factors of significance for LC were nodal (N) status (p < 0.001); for OS, 3D-CRT (p = 0.038), N status (p = 0.011), and T status (p = 0.012); and for FFR, 3D-CRT (p = 0.024) and N status (p < 0.001). CONCLUSION The use of 3D-CRT allows patients with anal canal cancer to complete radiation and chemotherapy without interruption for toxicity, with significant improvements in LC, FFR, and OS.
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Affiliation(s)
- Té Vuong
- Department of Radiation Oncology, McGill University Health Centre, Quebec, Canada.
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Knab B, Rash C, Farrey K, Jani AB. Intensity-modulated radiotherapy for neoadjuvant treatment of gastric cancer. Med Dosim 2006; 31:292-7. [PMID: 17134669 DOI: 10.1016/j.meddos.2006.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2005] [Revised: 03/08/2006] [Accepted: 03/29/2006] [Indexed: 11/19/2022]
Abstract
Radiation therapy plays an integral role in the treatment of gastric cancer in the postsurgery setting, the inoperable/palliative setting, and, as in the case of the current report, in the setting of neoadjuvant therapy prior to surgery. Typically, anterior-posterior/posterior-anterior (AP/PA) or 3-field techniques are used. In this report, we explore the use of intensity-modulated radiotherapy (IMRT) treatment in a patient whose care was transferred to our institution after 3-field radiotherapy (RT) was given to a dose of 30 Gy at an outside institution. If the 3-field plan were continued to 50 Gy, the volume of irradiated liver receiving greater than 30 Gy would have been unacceptably high. To deliver the final 20 Gy, an opposed parallel AP/PA plan and an IMRT plan were compared to the initial 3-field technique for coverage of the target volume as well as dose to the kidneys, liver, small bowel, and spinal cord. Comparison of the 3 treatment techniques to deliver the final 20 Gy revealed reduced median and maximum dose to the whole kidney with the IMRT plan. For this 20-Gy boost, the volume of irradiated liver was lower for both the IMRT plan and the AP/PA plan vs. the 3-field plan. Comparing the IMRT boost plan to the AP/PA boost-dose range (<10 Gy) in comparison to the AP/PA plan; however, the IMRT plan irradiated a smaller liver volume within the higher dose region (>10 Gy) in comparison to the AP/PA plan. The IMRT boost plan also irradiated a smaller volume of the small bowel compared to both the 3-field plan and the AP/PA plan, and also delivered lower dose to the spinal cord in comparison to the AP/PA plan. Comparison of the composite plans revealed reduced dose to the whole kidney using IMRT. The V20 for the whole kidney volume for the composite IMRT plan was 30% compared to approximately 60% for the composite AP/PA plan. Overall, the dose to the liver receiving greater than 30 Gy was lower for the composite IMRT plan and was well below acceptable limits. In conclusion, our study suggests a dosimetric benefit of IMRT over conventional planning, and suggests an important role for IMRT in the neoadjuvant treatment of gastric cancer.
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Affiliation(s)
- Brian Knab
- Department of Radiation and Cellular Oncology, The University of Chicago Hospitals, Chicago, IL, USA
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Milano MT, Garofalo MC, Chmura SJ, Farrey K, Rash C, Heimann R, Jani AB. Intensity-modulated radiation therapy in the treatment of gastric cancer: early clinical outcome and dosimetric comparison with conventional techniques. Br J Radiol 2006; 79:497-503. [PMID: 16714752 DOI: 10.1259/bjr/43441736] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The purpose of this study was to assess the efficacy and toxicity of intensity-modulated radiation therapy (IMRT) in the treatment of gastric cancer. Seven patients with gastric cancer were treated with IMRT. Six patients (all Stage III) received post-operative chemoradiotherapy with concurrent 5-fluorouracil and leucovorin. One received planned pre-operative radiation, though did not proceed to surgery. All patients were planned to receive 50.4 Gy in 1.8 Gy fractions. IMRT planning was compared with opposed anterior-posterior: posterior-anterior (AP/PA) and 3-field conventional three-dimensional plans. When compared with either AP/PA or 3-field plans, IMRT significantly reduced the volume exceeding the threshold dose of the liver and at least one kidney. Target coverage with IMRT was excellent, with 98+/-1% of the target receiving >or=100% of the dose. Compared with AP/PA and 3-field plans, IMRT plans had a greater percentage of target receiving the prescribed dose, but also a greater volume receiving >110% of the dose. IMRT was well tolerated; no patients developed acute gastrointestinal toxicity greater than grade 2. All seven experienced grade 2 nausea, three had grade 2 diarrhoea and two had grade 2 oesophagitis. Weight loss ranged from 0-12% (mean 6.1% and median 5.8%). IMRT in the treatment of gastric malignancies reduces the mean and above threshold doses to critical normal tissues. In an initial cohort of seven patients, 50.4 Gy delivered by IMRT is well tolerated and safe.
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Affiliation(s)
- M T Milano
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL 60637, USA
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Isobe K, Uno T, Kawakami H, Ueno N, Kawata T, Ito H. A case of gastric lymphoma with marked interfractional gastric movement during radiation therapy. Int J Clin Oncol 2006; 11:159-61. [PMID: 16622754 DOI: 10.1007/s10147-005-0557-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2005] [Accepted: 12/16/2005] [Indexed: 10/24/2022]
Abstract
Radiation therapy (RT) with or without chemotherapy has been a widely accepted treatment for patients with localized gastric lymphoma. We encountered a patient with gastric diffuse large B-cell lymphoma, whose stomach volume, and the position and location of the clips that had been endoscopically placed to define the gastric lesions clearly differed considerably at three simulation times. The positions of the clips moved between 5 and 35 mm (mean 24 mm) laterally on simulation films. The mean movement of these clips along the cephalocaudal directions was 8 mm (range 0-15 mm). There have been no published articles which systemically evaluated interfractional gastric motion between each treatment session. Therefore this is an important observation in the management of patients with gastric lymphoma with RT.
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Affiliation(s)
- Koichi Isobe
- Department of Radiology, Chiba University Hospital, 1-8-1 Inohana, Chiba 260-8677, Japan.
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Kassam Z, Lockwood G, O'brien C, Brierley J, Swallow C, Oza A, Siu L, Knox JJ, Wong R, Cummings B, Kim J, Moore M, Ringash J. Conformal radiotherapy in the adjuvant treatment of gastric cancer: Review of 82 cases. Int J Radiat Oncol Biol Phys 2006; 65:713-9. [PMID: 16626887 DOI: 10.1016/j.ijrobp.2006.01.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2005] [Revised: 12/31/2005] [Accepted: 01/02/2006] [Indexed: 01/15/2023]
Abstract
BACKGROUND The Intergroup 0116 study showed a survival benefit with adjuvant chemoradiotherapy (CRT) for resected gastric cancer. We report our experience using conformal radiotherapy (RT). METHODS AND MATERIALS Eighty-two patients with resected gastric or gastroesophageal junction (GEJ) adenocarcinoma, Stage IB to IV (M0), were treated with 45 Gy in 25 fractions using a 5-field conformal technique. Chemotherapy was in accordance with the Intergroup 0116 study, or infusional 5-fluorouracil and cisplatin in a phase I/II trial. RESULTS Mean age was 56.4 years. Median follow-up was 22.8 months. Grade 3 or greater acute toxicity (National Cancer Institute Common Terminology Criteria of Adverse Events, version 3.0) was noted in 57% of patients (upper gastrointestinal tract 34%, hematologic 33%). One patient died of neutropenic sepsis. Radiation Therapy Oncology Group Grade 3 late toxicity included esophageal strictures (3 patients) and small bowel obstruction (1 patient). Full course CRT was completed by 67% of patients. Of 26 patients who relapsed, 20 died. Site of first relapse was available on 23 patients: 8 locoregional and distant, 4 locoregional alone, 11 distant alone. Overall and relapse-free survival were 69% and 54% at 3 years. CONCLUSION Adjuvant CRT for gastric cancer, even with conformal RT, is associated with significant toxicity. Survival was comparable to that reported in the Intergroup 0116 study.
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Affiliation(s)
- Zahra Kassam
- Department of Radiation Oncology, The Princess Margaret Hospital, Toronto, ON, Canada
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