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- Masahiro Saito, Tomoyuki Koike, Yasuaki Abe, Kenichiro Nakagawa, Takeshi Kanno, Xiaoyi Jin, Waku Hatta, Kaname Uno, Naoki Asano, Akira Imatani, Fumiyoshi Fujishima, and Atsushi Masamune.
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan.
- Intern. Med. 2021 Feb 1; 60 (3): 391396391-396.
AbstractWe herein report the first case of foveolar-type gastric adenocarcinoma that developed after the initiation of vonoprazan (VPZ). A 51-year-old man had heartburn at the first visit and reflux esophagitis endoscopically, so he started taking VPZ. An approximately 5-mm-sized reddish polyp with a raspberry-like morphology was detected at the anterior wall of the upper body of the stomach 156 weeks after starting maintenance therapy with VPZ 10 mg/day. It was diagnosed as foveolar-type gastric adenocarcinoma based on a biopsy. Another approximately 4-mm-sized foveolar-type gastric adenocarcinoma was also detected at the posterior wall of the middle body of the stomach.
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