title: [Multiple primary colo-rectal carcinoma--an analysis of 28 cases].
abstract: Of 226 cases with colo-rectal carcinoma treated, 21 (7.89%) had synchronous and 7 (2.63%) had metachronous multiple primary lesions. In these 28 cases, 13 (46.43%) were complicated by adenomatous polyp, in which 7 cases (53.85%) became malignant. The tumor in 9 cases (18.75%) of synchronous carcinoma was less than 1 cm in diameter and could not be palpated during operation. The early metachronous carcinoma could be detected by fiberendoscopy during follow-up. Its diagnostic accuracy can be improved by fiberendoscopy before operation and during follow-up.
authors.affiliation: Third Hospital, Third Military Medical College, Chongquing.
authors.forename: S B
authors.initials: SB
authors.lastname: Zhang
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000601:surgery; D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000175:diagnosis; D003110:Colonic Neoplasms / Q000175:diagnosis; D003111:Colonic Polyps / Q000175:diagnosis; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis* / Q000601:surgery; D012004:Rectal Neoplasms / Q000175:diagnosis