Early detection of colonic cancer by colonoscopy.
D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004724:Endoscopy; D005069:Evaluation Studies as Topic; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D009780:Occult Blood; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000473:pathology