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Helicobacter suis Infected Gastric Mucosa-associated Lymphoid Tissue Lymphoma Remission by Eradication Therapy, Report of a Case Kengo Tokunaga 1 , Akiko Ohno 2 , Yosuke Ida 1 , Sawako Miyoshi 1 , Yoko Jimbo 2 , Emiko Rimbara 3 , Hidenori Matsui 3 , Keigo Shibayama 4 , Masato Suzuki 5 , Takako Osaki 6 , Hiroyoshi Ota 7 , Yukino Nikai 8 , Kiyotaka Nagahama 8 , Junji Shibahara 8 , Susumu Okamoto 1 , Tadakazu Hisamatsu 2 1Department of General Medicine, Kyorin University School of Medicine, Tokyo 2Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Tokyo 3Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo 4Department of Bacteriology, Nagoya University Graduate School of Medicine, Nagoya, Japan 5Antimicrobial Research Center, National Institute of Infectious Diseases, Tokyo 6Department of Infectious Diseases, Kyorin University School of Medicine, Tokyo 7Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan 8Department of Pathology, Kyorin University School of Medicine, Tokyo Keyword: 胃MALTリンパ腫 , NHPH , Helicobacter suis , Helicobacter pylori陰性 , 除菌療法 pp.87-94
Published Date 2023/1/25
DOI https://doi.org/10.11477/mf.1403203095
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 A man in his 50s underwent upper gastrointestinal endoscopy due to an abnormality observed during a medical checkup. The EGD(esophagogastroduodenoscopy)revealed reddish rough mucosa along the greater curvature of the lower body of the stomach. Based on the pathological findings, like atypical lymphocyte clusters, lymphoepithelial lesion images, and immunostaining images, a diagnosis of gastric MALT(mucosa-associated lymphoid tissue)lymphoma was made. The urea breath test and serum antibody tests were negative for Helicobacter pylori infection. However, the culture and polymerase chain reaction methods were positive for H. suis(Helicobacter suis)infection. Hence, H. suis-infected gastric MALT lymphoma of Lugano stage I was diagnosed. Eradication therapy with triple-drug therapy was prescribed, and H. suis-negative conversion was confirmed. The EGD and pathological findings showed an improvement. Also, the anemia improved after initiating the eradication therapy.


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

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