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A Case of Gastric Neuroendocrine Tumor(NET) with a Genetic Abnormality Yutaro Ihara 1,2 , Junji Umeno 1 , Yoshifumi Hori 1,3 , Yoshiaki Taniguchi 1,4 , Shinichiro Kawatoko 1 , Minako Fujiwara 5 , Keisuke Kawasaki 1 , Takehiro Torisu 1 , Motohiro Esaki 6 , Takanari Kitazono 1 1Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan 2Department of Gastroenterology, Onga Nakama Medical Association, Onga Hospital, Fukuoka, Japan 3Department of Gastroenterology, Shimonoseki City Hospital, Shimonoseki, Japan 4Department of Anatomic Pathology, pathological sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan 5Department of Pathology, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan 6Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan Keyword: 胃神経内分泌腫瘍 , neuroendocrine tumor , ATP4A遺伝子 , プロトンポンプ , 胃壁細胞 pp.747-756
Published Date 2024/5/25
DOI https://doi.org/10.11477/mf.1403203629
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 This is a case of a 50s Japanese woman who underwent esophagogastroduodenoscopy, which revealed approximately 10 reddish submucosal tumors in the fundus and body of the stomach and many small hemispherical protrusions on the background mucosa. No atrophic change was observed in type I gastric NETs(neuroendocrine tumors), and the background mucosa was rather a hyperplastic change. Serum gastrin levels were markedly increased, and both serum antiparietal cell and anti-intrinsic factor antibodies were negative. No neoplastic lesions were observed in the organs other than the stomach. The diagnosis of gastric NET due to gastric wall cell dysfunction was established based on the finding of pathological mutations in proton pump-related genes in the genetic test, which failed to correspond to any of the types I to III of Rindi's classification.


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

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