Acute recurrent pancreatitis associated with anomalous pancreaticobiliary ductal union and choledochal cyst of mixed type I plus II.

Anomalous pancreatobiliary ductal union (APBDU) has a variety of presentations. We report the case of a 72-year-old woman who presented with recurrent episodes of acute pancreatitis that were found to be caused by the presence of an APBDU associated with an unusual choledochal cyst of mixed type I plus II. She underwent endoscopic sphincterotomy and has remained asymptomatic to the present time, 2 years after sphincterotomy. A discussion of the possible etiologies of choledochal cyst and pancreatitis due to APBDU is presented.