Detection of intracolonic lesion by barium contrast enema. The importance of adequate colon preparation to diagnostic accuracy

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Abstract
Frequently, the clinical significance of the Ba contrast enema is minimal because of inadequate colon preparation prior to examination. The frequency of false-positive routine Ba enemas was 17% in 230 consecutive patients who underwent colonoscopy for removal of specific radiographically identified polypoid colon lesions. Initial Ba enema inaccuracies were documented with postendoscopic air-contrast radiography in colons that were endoscopically proved to be mechanically clean following a 2 day colon preparation. More emphasis on a 2 day colon preparation, before the initial Ba contrast enema, would substantially reduce the frequency of false-positive interpretations.

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