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Effect of Radiotherapy on MALT Lymphomas not Responding to H. pylori Eradication Akira Tari 1 , Kouzou Kashiwado 2 , Hideki Asaoku 3 , Hiroshi Tani 1 , Megumu Fujihara 4 , Yasuhiko Kitadai 5 , Hiroshi Masuda 5 , Tadashi Yoshino 6 1Sixth Department of Internal Medicine, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital, Hiroshima, Japan 2Department of Radiology, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital, Hiroshima, Japan 3Fourth Department of Internal Medicine, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital, Hiroshima, Japan 4Department of Pathology, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital, Hiroshima, Japan 5Department of Medicine and Molecular Science, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan 6Department of Pathology, Graduate School of Medicine and Dentistry, Okayama University, Okayama, Japan Keyword: MALTリンパ腫 , Helicobacter pylori除菌 , 放射線療法 , API2-MALT1/t(11;18)(q21;q21) pp.1250-1260
Published Date 2007/7/25
DOI https://doi.org/10.11477/mf.1403101157
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 Gastric and duodenal MALT lymphomas were classified into 4 groups (Group A, B, C, and D) by the existence of API2-MALT1 chimeric transcript, H. pylori infection and its response to H. pylori eradication. Cases in group A were API2-MALT1 negative, H. pylori positive which responded to H. pylori eradication. Non responders were classified into group B. Cases in group C were API2-MALT1 negative and H. pylori negative. Group D was API2-MALT1 positive. Twenty two cases of clinical stage I in group B, C and D which did not respond to eradication (2 cases also had chemotherapy) received radiotherapy and all of them achieved complete response. Acute toxicities were only grade 1 digestive symptoms and grade 1~2 hematologic toxicities and late toxicity was seen in only one case as grade 2 nephropathy. Nephropathy was avoided by the multi-field technique instead of the 2-field technique. Radiotherapy can be an effective and safe treatment for gastric and duodenal MALT lymphomas in clinical stage I.


Copyright © 2007, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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