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Therapeutic Strategy for Patients with Eradication Therapy-resistant Gastric MALT(mucosa-associated lymphoid tissue)Lymphoma of Helicobacter pylori Taiji Akamatsu 1,2 , Yoko Okiyama 3 , Hideharu Miyabayashi 4 , Tadanobu Nagaya 2 , Tomoaki Suga 2 , Kazuhisa Shimodaira 5 , Yoshimi Cho 5 , Kojiro Tokutake 5 , Hiroyoshi Ota 6 1Endoscopy Center, Suzaka Hospital, Nagano Prefectural Hospital Organization, Suzaka, Japan 2Department of Internal Medicine, Gastroenterology, Shinshu University School of Medicine, Matsumoto, Japan 3Internal Medicine, Maruko Central Hospital, Ueda, Japan 4Internal Medicine, Chushin-Matsumoto Hospital, National Hospital Organization Matsumoto Medical Center, Matsumoto, Japan 5Internal Medicine, Suzaka Hospital, Nagano Prefectural Hospital Organization, Suzaka, Japan 6Department of Biomedical Sciences, School of Health Sciences, Shinshu University School of Medicine, Matsumoto, Japan Keyword: MALTリンパ腫 , 除菌治療抵抗性 , 二次治療 , 低線量放射線療法 , 化学療法 pp.623-634
Published Date 2014/5/24
DOI https://doi.org/10.11477/mf.1403114144
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 Eradication therapy for H. pylori(Helicobacter pylori)is considered as the first line of therapy for gastric MALT lymphoma. However, in almost 20~30% of patients with gastric MALT lymphoma, eradication therapy proves ineffective. For patients with eradication therapy-resistant gastric MALT lymphoma, second line therapy is required. However, to date, a second line therapeutic strategy for treating patients with gastric MALT lymphoma has not been defined.

 Low-dose(30Gy)radiation therapy is suggested as a potential method of second line therapy for localized gastric MALT lymphoma. However, intense systemic follow-up and surveillance for distant involvement or appearance of secondary malignancy in the field of radiation is needed. Chemotherapy(or chemoradiation therapy)with CHOP regimens, including rituximab, is useful in patients with extensive MALT lymphoma and in those with transformation into diffuse large B-cell lymphoma. In contrast, single-agent chemotherapy using cyclophosphamide is effective for localized gastric MALT lymphoma. Earlier suspension of therapy in localized gastric MALT lymphoma may result in relapse and occurrence of secondary malignancy.

 Surgical intervention is required when complications such as perforation and uncontrolled bleeding are recognized. Follow-up is not usually recommended for patients with eradication therapy-resistant gastric MALT lymphoma, except for elderly patients and patients with other severe diseases, because MALT lymphoma is believed to have a gradual onset.


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

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