title: Diagnosis and treatment of a gastric hamartomatous inverted polyp: report of a case.
abstract: Gastric hamartomatous polyps are rare and difficult to diagnose. We report the case of a 43-year-old woman admitted to our hospital after an upper gastrointestinal series revealed a submucosal tumor. Upper gastrointestinal endoscopy showed a submucosal tumor (SMT), which was eroded with a depression on its surface, in the upper corpus. Endoscopic ultrasonography showed a heterogeneous tumor in the third layer. A laparoscopic wedge resection of the stomach allowed us to perform complete resection of the tumor, which measured 2.8 cm in diameter. The pathological diagnosis was a gastric hamartomatous inverted polyp. The postoperative course was uneventful. Only 27 cases of gastric hamartomatous polyps have been reported in Japan. Hamartomatous inverted polyps without a stalk are classified as the "SMT type" because the tumor is inverted into the submucosal layer, whereas polyps with a stalk are classified as the "polyp type." All of the polyps in past reports were resected endoscopically; however, laparoscopic wedge resection may be indicated for SMT-type hamartomatous inverted polyps larger than 2.0 cm in diameter.
authors.affiliation: Department of Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo 160-8582, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Aoki
authors.forename: Masashi
authors.initials: M
authors.lastname: Yoshida
authors.forename: Yoshiro
authors.initials: Y
authors.lastname: Saikawa
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Otani
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Kubota
authors.forename: Koichiro
authors.initials: K
authors.lastname: Kumai
authors.forename: Go
authors.initials: G
authors.lastname: Wakabayashi
authors.forename: Tai
authors.initials: T
authors.lastname: Omori
authors.forename: Makio
authors.initials: M
authors.lastname: Mukai
authors.forename: Masaki
authors.initials: M
authors.lastname: Kitajima
mesh_terms: D000328:Adult; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000601:surgery*; D006222:Hamartoma / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D011127:Polyps / Q000175:diagnosis / Q000601:surgery*; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000601:surgery*