title: The use of colonoscopy in the study of synchronous colorectal neoplasms.
abstract: Over a 5-year period, 185 patients with primary colorectal carcinoma were studied by colonoscopy for synchronous neoplasms. Twenty-eight patients had incomplete examinations due to obstructing tumors, and 157 had total colonoscopy. Sixty patients (35.9%) had synchronous neoplasms, of which 43 (25.7%) were adenomatous polyps, 5 (3%) were villous polyps, and 12 (7.2%) were carcinomas. The planned surgical procedure was altered on 7 of 12 synchronous cancers (58.3%), 10 of 38 adenomatous polyps, and 17 of 157 (10.8%) patients who underwent total colonoscopy. Preoperative colonoscopy is deemed essential for the optimal management of the patient with colorectal carcinoma.
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000473:pathology; D003110:Colonic Neoplasms / Q000473:pathology* / Q000601:surgery; D003113:Colonoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary; D011127:Polyps / Q000473:pathology; D012004:Rectal Neoplasms / Q000473:pathology* / Q000601:surgery; D012812:Sigmoidoscopy