title: Follow-up colonoscopy in patients with colorectal adenomatous polyps.
abstract: Multiple follow-up colonoscopies were performed in 44 asymptomatic patients after polypectomy of colorectal adenomatous polyps. Twenty-six patients (59%) developed new adenomatous polyps. In 81% the new polyps were located in the same segment of the colon where a previous polyp had been totally removed. Polyps removed during follow-up, compared with the initial polyps, revealed significantly more benign and smaller polyps. The number of initial polyps together with occurrence of atypia were factors determining a short time interval for developing new adenomatous polyps. The mean time for developing a 5-mm or larger polyp was significantly longer than polyps less than 5 mm in diameter.
authors.affiliation: Roswell Park Memorial Institute, Department of Surgical Oncology, Buffalo, NY 14263.
authors.forename: H
authors.initials: H
authors.lastname: Nava
authors.forename: G
authors.initials: G
authors.lastname: Carlsson
authors.forename: N J
authors.initials: NJ
authors.lastname: Petrelli
authors.forename: A
authors.initials: A
authors.lastname: Mittelman
mesh_terms: D000236:Adenoma / Q000473:pathology / Q000517:prevention & control*; D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000473:pathology / Q000517:prevention & control*; D003111:Colonic Polyps / Q000601:surgery*; D003113:Colonoscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000473:pathology / Q000517:prevention & control*; D012307:Risk Factors