title: [Successive cancers of the colon and rectum].
abstract: The incidence of successive cancers of the colon and rectum varies from 1.4% to 5.1%. Among 350 malignant colorectal tumours operated in our unit, there were 7 cases of successive cancers (2%). The mean interval between the discovery of the first and second cancer was 4.9 years with a range of 1 to 10 years, 3 cases before 2 years and 4 cases after 5 years. The diagnosis of the second cancer was made by coloscopy in 4 cases and was revealed by rectal bleeding in 4. CAE level was unchanged in all 7 patients and was not contributive to diagnosis. At diagnosis of the first cancer there were 5 intraparietal tumours including 2 with lymph node dissemination. At diagnosis of the second cancer, there were 5 cases of intraparietal tumours with 1 lymph node extension. An association with benign polyps was observed in 2 of the 7 cases at the first diagnosis and in 4 of the 7 at the second. Prophylaxy requires complete work-up with total coloscopy at the diagnosis of the first cancer. Segmentary colectomy is sufficient in patients over 65, but we prefer total colectomy in patients under 65.
authors.affiliation: Service de Chirurgie digestive, Hôpital E.-Herriot, Lyon.
authors.forename: E
authors.initials: E
authors.lastname: Tissot
authors.forename: A
authors.initials: A
authors.lastname: Ennassih
authors.forename: A
authors.initials: A
authors.lastname: Naouri
authors.forename: C
authors.initials: C
authors.lastname: Naouri
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003110:Colonic Neoplasms / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000473:pathology / Q000601:surgery*; D012004:Rectal Neoplasms / Q000473:pathology / Q000601:surgery*; D012307:Risk Factors
vernacular_title: Cancers successifs du côlon et du rectum.