The radiological detection of early carcinoma.
D000230:Adenocarcinoma / Q000000981:diagnostic imaging*; D000368:Aged; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000000981:diagnostic imaging*; D008297:Male; D008722:Methods; D011859:Radiography; D013997:Time Factors