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"Innocent" pneumobilia. Report of a case and review of the literature.

A young woman was found to have pneumobilia during evaluation for right-upperquadrant abdominal pain. Preoperative studies and surgical exploration failed to uncover any cause for the abnormal gas, and it was still present one year postoperatively. There is a discussion of the possible causes and a review of the literature. It is concluded that cholecystectomy is indicated in this rare situation, even in the absence of cholelithiasis, to prevent the later development of ascending cholangitis.