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Takahashi, Keitaro,Ueno, Nobuhiro,Sasaki, Takahiro,Kobayashi, Yu,Sugiyama, Yuya,Murakami, Yuki,Kunogi, Takehito,Ando, Katsuyoshi,Kashima, Shin,Moriichi, Kentaro,Tanabe, Hiroki,Kamikokura, Yuki,Yuzawa, The Korean Gastric Cancer Association 2021 Journal of gastric cancer Vol.21 No.1
Gastric adenocarcinoma of the fundic gland mucosa type (GA-FGM) was proposed as a new variant of gastric adenocarcinoma of the fundic gland type (GA-FG). However, at present, the influence of Helicobacter pylori and the speed of progression and degree of malignancy in GA-FGM remain unclear. Herein, we report the first case of intramucosal GA-FGM that was endoscopically observed before and after H. pylori eradication over 15 years. The lesion showed the same tumor size with no submucosal invasion and a low MIB-1 labeling index 15 years after its detection using endoscopy. The endoscopic morphology changed from 0-IIa before H. pylori eradication to 0-IIa+IIc and then 0-I after H. pylori eradication. These findings suggest that the unaltered tumor size reflects low-grade malignancy and slow growth, and that the endoscopic morphology is influenced by H. pylori eradication.