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Gastric Adenocarcinoma of Gastric Phenotype Hiroya Ueyama 1 , Takashi Yao 2 , Noboru Yatagai 1 , Hiroyuki Komori 1 , Yoichi Akazawa 1 , Tsutomu Takeda 1 , Kohei Matsumoto 1 , Kenshi Matsumoto 1 , Jun Nakahodo 2 , Yuya Yamashiro 2 , Sho Tsuyama 2 , Takashi Hashimoto 3 , Natsumi Tomita 3 , Shinji Mine 3 , Yoshiaki Kajiyama 3 , Akihito Nagahara 1 1Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo 2Department of Human Pathology, Juntendo University, School of Medicine, Tokyo 3Department of Esophageal and Gastroenterological Surgery, Juntendo University, School of Medicine, Tokyo Keyword: 胃底腺型胃癌 , 胃底腺型腺癌 , 胃底腺粘膜型腺癌 , 腺窩上皮型胃癌 , 分化型腺癌 , 未分化型腺癌 , 胃型形質 pp.67-82
Published Date 2020/1/25
DOI https://doi.org/10.11477/mf.1403201928
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 Gastric adenocarcinoma of gastric phenotype is classified into GAFG(gastric adenocarcinoma of fundic gland type), GAFGM(gastric adenocarcinoma of fundic gland mucosal type), gastric adenocarcinoma of foveolar type(whitish, flatly elevated type ; raspberry shape type), and gastric adenocarcinoma of gastric phenotype with H. pylori(Helicobacter pylori)infection. We observed that gastric adenocarcinoma of gastric phenotype exhibited some peculiar endoscopic and demarcation findings. For instance, GAFG and mixed type of differentiated and undifferentiated gastric adenocarcinoma with H. pylori infection, in which the cancer had not spread to the superficial mucosal layer, were not demarcated clearly either by WLI(white light image)or ME-NBI(magnifying endoscopy with narrow-band imaging). In contrast, GAFGM, gastric adenocarcinoma of foveolar type, and differentiated type gastric adenocarcinoma with H. pylori infection, in which the cancer had spread to the superficial mucosal layer, were clearly demarcated by both WLI and ME-NBI. We could classify the endoscopic features of gastric adenocarcinoma of gastric phenotype according to H. pylori infection status. It is necessary to evaluate and assess the endoscopic characteristics of each tumor, including the type of background mucosa, for precise endoscopic diagnosis and demarcation of gastric adenocarcinoma of gastric phenotype.


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

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