Intrahepatic Bile Duct Dilatation Caused by Pancreatic Pseudocyst: A Case Report

ABSTRACT

Pancreatic pseudocyst can fistulize to adjacent organs such as stomach, duodenum, colon, and esophagus. Fistula formation with bile duct is rare. Reported cases of biliary involvement of pancreatic pseudocyst include fistula formation between the pancreatic pseudocyst and common bile duct. Intrahepatic bile duct dilatation caused by fistula formation with pancreatic pseudocyst is extremely rare. There are no published reports to the best of our knowledge. Herein, we report a case of intrahepatic bile duct dilatation caused by fistulous communication with a pancreatic pseudocyst. The peripheral intrahepatic bile duct surrounding the pseudocyst was dilated without involving the common bile duct. Magnetic resonance cholangiopancreatography image showed a connection between the pancreatic pseudocyst and dilated intrahepatic bile ducts with a multifocal cystic and beaded appearance.