title: Diagnosis of carcinoma of the colon by barium enema.
abstract: Double-contrast barium enemas can detect 96% of colonic carcinomas. This is similar to the detection rate for colonoscopy. Single-contrast enemas compare badly. Small sigmoid tumours are most likely to be missed. Inadequate bowel preparation, single-contrast examinations and observer error account for most barium enema failures.
mesh_terms: D001466:Barium Sulfate; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D003113:Colonoscopy; D004733:Enema; D005188:False Negative Reactions; D006801:Humans; D011859:Radiography
chemical_list: D001466:Barium Sulfate