title: Papillary adenocarcinoma occurring in a gastric hyperplastic polyp observed by magnifying endoscopy and treated with endoscopic mucosal resection.
abstract: The patient was a 75-year-old man. He had been diagnosed with gastric hyperplastic polyp 4 years previously. The color of the apex of this polyp was whitish. Magnifying endoscopy findings revealed disappearance of the mucosal microstructure with irregular branched capillaries at the top of the polyp. Endoscopic mucosal resection (EMR) was performed. Histological examination revealed that a part of the polyp surface was replaced with papillary adenocarcinoma. Diagnosis of papillary adenocarcinoma in a hyperplastic polyp with mucosal invasion was made. Magnifying endoscopy was useful for the detection of gastric cancer occurring in the hyperplastic polyp in the present case.
authors.affiliation: The Second Department of Internal Medicine, Sumitomo Besshi Hospital, Niihama. shoji_hirasaki@ni.sbh.gr.jp
authors.forename: Shoji
authors.initials: S
authors.lastname: Hirasaki
authors.forename: Hiromitsu
authors.initials: H
authors.lastname: Kanzaki
authors.forename: Kohei
authors.initials: K
authors.lastname: Fujita
authors.forename: Shuji
authors.initials: S
authors.lastname: Matsumura
authors.forename: Eiji
authors.initials: E
authors.lastname: Matsumoto
authors.forename: Eiichiro
authors.initials: E
authors.lastname: Yumoto
authors.forename: Seiyuu
authors.initials: S
authors.lastname: Suzuki
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000150:complications / Q000473:pathology* / Q000601:surgery; D000368:Aged; D005773:Gastroscopy; D006801:Humans; D008297:Male; D011127:Polyps / Q000150:complications / Q000473:pathology* / Q000601:surgery; D013274:Stomach Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery