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

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

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

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<p>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) .<br> GHIPs are rare and difficult to diagnose based on forceps biopsy. We describe GHIPs with characteristic endoscopic findings in two patients.</p>

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