title: [A case of signet-ring cell type cancer of the colon].
abstract: A rare case of a primary signet-ring cell carcinoma of the sigmoid colon in a 66-year-old man is reported. Endoscopically, a sessile polyp, 2 cm in diameter, was found in sigmoid colon, consisting mainly of a well differentiated adenocarcinoma and, partially of a signet-ring cell carcinoma. A residual polyp was found at the same site in the sigmoid colon, sixth months after surgery. The resected polyp was histologically confirmed as being a signet-ring cell carcinoma, which had infiltrated into submucosal space by scirrhous invasion. After a polypectomy, a partial colectomy was performed and no carcinoma cells have been identified in the resected colon. We have speculated that this signet-ring cell polyp could develop into Borrmann type 4 advanced colon cancer.
authors.affiliation: Dept. of Pathology, Kanazawa Medical Univ.
authors.forename: C
authors.initials: C
authors.lastname: Maruyama
authors.forename: N
authors.initials: N
authors.lastname: Yamamichi
authors.forename: F
authors.initials: F
authors.lastname: Serikawa
authors.forename: E
authors.initials: E
authors.lastname: Ishii
authors.forename: H
authors.initials: H
authors.lastname: Matsunou
authors.forename: F
authors.initials: F
authors.lastname: Konishi
authors.forename: M
authors.initials: M
authors.lastname: Kikuchi
authors.forename: Y
authors.initials: Y
authors.lastname: Tsunamura
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000601:surgery; D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D000368:Aged; D003110:Colonic Neoplasms / Q000473:pathology*; D003111:Colonic Polyps / Q000473:pathology / Q000601:surgery; D006801:Humans; D008297:Male; D009378:Neoplasms, Multiple Primary; D012811:Sigmoid Neoplasms / Q000473:pathology / Q000601:surgery