Biliobiliary fistulas manifested by worsening liver function--a case report.

We report a case of cholecystolithiasis with biliobiliary fistulas from gallbladder to hepatic ducts, which were manifested by worsening liver dysfunction. Although it was not diagnosed preoperatively, it was successfully treated by cholecystectomy with closure of fistulas by the gallbladder wall. This case suggests that an internal biliary fistula may be possible, when the gallbladder wall is thickened and shrunken in the case of cholecystolithiasis, accompanied with liver dysfunction despite no dilatation of the common bile duct.