Pancreaticobiliary Maljunction without Biliary Dilatation Diagnosed following Traumatic Gallbladder Injury

Abstract

We report a rare case of pancreaticobiliary maljunction without biliary dilatation following traumatic gallbladder injury in a 38-year-old man who presented with abdominal pain and vomiting after being kicked during karate. We diagnosed gallbladder injury based on computed tomography, and he underwent laparoscopic cholecystectomy. Intraoperative cholangiography revealed pancreaticobiliary maljunction without bilary dilatation at the junction. Histopathological examination of the gallbladder mucosa revealed intraepithelial neoplasia BillN-1, 2. After his condition improved, we performed resection of extrahepatic bile ducts with intrahepatic cholangiojejunostomy to prevent cholangiocarcinoma. At the time of writing this report, he is alive without evidence of cholangiocarcinoma.