title: Barium enemas of carcinoma of the colon: sensitivity of double- and single-contrast studies.
abstract: A total of 1,140 primary colorectal carcinomas found in 1084 patients during a 5 1/2-year period (1976 to mid-1981) at the Mayo Clinic was reviewed to evaluate the accuracy of detection by the double- and single-contrast barium enema examinations. Both methods were equally sensitive in detecting colon cancer above the proctoscopic level. The error rate (ulcerative colitis excluded) was 4.8% for the single-contrast enema and 4.7% for the double-contrast study. Neither type of examination was superior in finding smaller lesions or earlier staged lesions. Several causes for error were identified: fluoroscopic inexperience, technical factors, misinterpretation of radiologic findings, and distraction.
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging; D001466:Barium Sulfate; D003110:Colonic Neoplasms / Q000145:classification / Q000000981:diagnostic imaging*; D003287:Contrast Media; D003951:Diagnostic Errors; D004733:Enema; D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D009367:Neoplasm Staging; D011859:Radiography; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate