Extrahepatic biliary cystadenoma: an unusual cause of recurrent cholangitis.

Extrahepatic biliary cystadenoma is a rare benign lesion with malignant potential. Fewer than 100 cases have been reported in the literature. The most common clinical presentation is obstructive jaundice. Frank cholangitis is extremely rare. The authors report a case of extrahepatic biliary cystadenoma in a 55-year-old woman who presented with recurrent episodes of cholangitis.