The radiological detection of early carcinoma and pre-malignant lesions of the colon and rectum.
D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D007417:Intestinal Polyps / Q000000981:diagnostic imaging*; D011230:Precancerous Conditions / Q000000981:diagnostic imaging*; D011859:Radiography; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging*