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.
Schechner SA, Miller ID, Ehrlich FE, Knapp RW, Mullen JT. "Innocent" PneumobiliaReport of a Case and Review of the Literature. Arch Surg. 1974;108(1):118-120. doi:10.1001/archsurg.1974.01350250104027