胃SMT様形態を示したHamartomatous inverted polypの2例

山本 安則; 石山 晃世志; 城間 翔; 中野 薫; 山﨑 明; 吉水 祥一; 堀内 裕介; 由雄 敏之; 平澤 俊明; 土田 知宏; 河内 洋; 山本 智理子; 藤崎 順子

doi:10.11641/pde.91.1_144

Case report

Two cases of gastric hamartomatous inverted polyps with gastric submucosal tumor-like elevated lesions

Yasunori Yamamoto, Akiyoshi Ishiyama, Sho Shiroma, Kaoru Nakano, Akira Yamasaki, Shoichi Yoshimizu, Yusuke Horiuchi, Toshiyuki Yoshio, Toshiaki Hirasawa, Tomohiro Tsuchida, Hiroshi Kawachi, Noriko Yamamoto, Junko Fujisaki

Author information

Yasunori Yamamoto
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Akiyoshi Ishiyama
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Sho Shiroma
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Kaoru Nakano
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Akira Yamasaki
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Shoichi Yoshimizu
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Yusuke Horiuchi
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Toshiyuki Yoshio
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Toshiaki Hirasawa
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Tomohiro Tsuchida
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Hiroshi Kawachi
Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Noriko Yamamoto
Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research
Junko Fujisaki
Department of gastroenterology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research

Keywords: Hamartomatous inverted polyp

JOURNAL FREE ACCESS

2017 Volume 91 Issue 1 Pages 144-145

DOI https://doi.org/10.11641/pde.91.1_144

Details

Abstract

A 56-year-old female and a 62-year-old male were referred to our hospital with gastric elevated lesions. White light imaging revealed a submucosal tumor-like lesion located at the upper gastric body, and endoscopic ultrasound sonography revealed multiple anechoic areas in the second and third layers in both patients. The masses in the female and male patients were resected by ESD and LECS, respectively. Microscopic findings of resected specimens showed cystic proliferation of glands and formation of ectopic duct-like structures, which was diagnosed as a gastric hamartomatous inverted polyp (GHIP) .
GHIPs are rare and difficult to diagnose based on forceps biopsy. We describe GHIPs with characteristic endoscopic findings in two patients.

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