[Diagnostic capacity of x-ray in detecting small swellings in the large intestine].
D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D007417:Intestinal Polyps / Q000000981:diagnostic imaging*; D007420:Intestine, Large / Q000000981:diagnostic imaging*; D011859:Radiography; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging*