title: Chronic ulcerative colitis and Crohn's disease as precancerous conditions: what is the role of colonoscopy?
authors.affiliation: Cancer Epidemiology Unit, University Hospital, Uppsala, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Ekbom
mesh_terms: D002908:Chronic Disease; D002986:Clinical Trials as Topic; D003093:Colitis, Ulcerative / Q000175:diagnosis* / Q000401:mortality; D003113:Colonoscopy; D003424:Crohn Disease / Q000175:diagnosis* / Q000401:mortality; D003937:Diagnosis, Differential; D006801:Humans; D009017:Morbidity; D011230:Precancerous Conditions / Q000175:diagnosis* / Q000401:mortality; D012307:Risk Factors