Abstract
We report the case of a patient with pancreaticobiliary maljunction with a long common channel of the duct of Wirsung origin which presented with choledocholithiasis with acute pancreatitis. A 38-year-old man was admitted with right upper abdominal pain and high fever. The diagnosis of choledocholithiasis with acute pancreatitis was made. ERCP depicted a pancreaticobiliary maljunction with a short communicating duct between the upper border of the long common channel and the duct of Santorini. The extrahepatic bile duct was dilated with a diameter of 12 mm. Small pancreatic ductal branches entered into the long common channel. He underwent a cholecystectomy with resection of the extrahepatic bile duct, followed by a hepaticoduodenostomy. The above ERCP findings suggest that the long common channel in the current case originated from the duct of Wirsung.