Low-grade Differentiated-Type Gastric Adenocarcinoma Invading to the Deep Submucosal Layer with Poorly Differentiated Adenocarcinoma, Report of a Case Yoji Sanomura 1 , Shinji Tanaka 1 , Shiro Oka 1 , Kenichi Kagemoto 2 , Norifumi Numata 2 , Shigeto Yoshida 1 , Yoshitaka Ueno 1 , Koji Arihiro 3 , Fumio Shimamoto 4 , Kazuaki Chayama 2 1Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 2Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan 3Department of Anatomical Pathology, Hiroshima University Hospital, Hiroshima, Japan 4Department of Health Sciences, Faculty of Human Culture and Science, Prefectural University of Hiroshima, Hiroshima, Japan Keyword: ESD , 低異型度分化型胃癌 , 低分化腺癌 , SM2癌 , 深達度診断 pp.101-108
Published Date 2014/1/25
DOI https://doi.org/10.11477/mf.1403114053
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 A man in his 70's was admitted to our hospital for the treatment of gastric carcinoma. The gastric carcinoma showed on 0-IIa lesion, 50mm in diameter. After we diagnosed the gastric carcinoma as an intramucosal carcinoma according to conventional endoscopy and endoscopic ultrasonography, we performed endoscopic submucosal dissection. The pathological diagnosis was low-grade differentiated-type adenocarcinoma invading to the submucosal layer with poorly differentiated adenocarcinoma(tub1>por2>tub2, pT1b2(SM 3,500μm), ly(-), v(-), pHM0, pVM1). Because we considered that the specimen resected by endoscopic submucosal dissection was non-curative, we performed additional surgical resection. This case suggested that the diagnosis should be performed based not only on conventional endoscopy and endoscopic ultrasonography but also on X-ray examination.

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