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Gastric Neuroendocrine Tumor Showing Unique Morphology, Report of a Case Natsuki Ishida 1 , Satoshi Osawa 2 , Tomohiro Sugiyama 1 , Takuma Kagami 1 , Shinya Tani 2 , Mihoko Yamade 1 , Moriya Iwaizumi 3 , Yasushi Hamaya 1 , Takahisa Furuta 4 , Rei Ishikawa 5 , Satoshi Baba 5 , Hirotoshi Kikuchi 6 , Yoshihiro Hiramatsu 6 , Kinji Kamiya 6 , Hiroya Takeuchi 6 , Ken Sugimoto 1 1First Department of Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan 2Department of Endoscopic and Photodynamic Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan 3Department of Laboratory Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan 4Center for Clinical Research, Hamamatsu University School of Medicine, Shizuoka, Japan 5Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan 6Second Department of Surgery, Hamamatsu University School of Medicine, Shizuoka, Japan Keyword: 粘膜下腫瘍 , 神経内分泌腫瘍 , 胃カルチノイド , Type III pp.473-481
Published Date 2022/4/25
DOI https://doi.org/10.11477/mf.1403202703
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 A woman in her 50s with a gastric tumor detected in the upper gastrointestinal series was referred to our hospital for detailed evaluation and treatment. Esophagogastroduodenoscopy revealed a submucosal tumor of 2.5cm in diameter with bridging folds in the greater curvature of the upper stomach. In addition to a smooth, reddish surface, the tumor had a groove-like depression at its center. Magnified narrow-band imaging revealed enlargement of crypts and cyan dilated vessels on its surface. The tumor was diagnosed as a NET(neuroendocrine tumor)G1 by forceps biopsy. Radical laparoscopic proximal gastrectomy was performed. Histopathological diagnosis confirmed gastric NET G1, T4N1M0, stage III, based on the American Joint Committee on Cancer/Union for International Cancer Control 8th edition staging system.


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

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