Detection of Intracolonic Lesion by Barium Contrast Enema

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Abstract
Frequently, the clinical significance of the barium contrast enema is minimal because of inadequate colon preparation prior to examination. The frequency of false-positive routine barium enemas was 17% in 230 consecutive patients who underwent colonoscopy for removal of specific radiographically identified polypoid colon lesions. Initial barium enema inaccuracies were documented with postendoscopic air-contrast radiography in colons that were endoscopically proved to be mechanically clean following a two-day colon preparation. These results suggest that more emphasis on a two-day colon preparation, before the initial barium contrast enema, would substantially reduce the frequency of false-positive interpretations. (JAMA242:2206-2208, 1979)

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