Inferior head resection of the pancreas and cyst resection for choledochal cyst with chronic calcifying pancreatitis.

We report inferior head resection of the pancreas and cyst resection for congenital choledochal cyst with an anomalous arrangement of pancreaticobiliary duct and chronic calcifying pancreatitis. A 42-year-old man was admitted to the National Cancer Center Hospital East complaining of back pain. Contrast-enhanced computed tomography showed marked dilatation of the bile duct and multiple pancreatic stones in the main pancreatic duct. Endoscopic retrograde cholangiopancreatography demonstrated pancreatic stones in the dilated main pancreatic duct. The patient underwent cyst excision, inferior head resection of the pancreas, hepaticojejunostomy and lateral pancreaticojejunostomy. The postoperative course was uneventful. This procedure relieved the back pain. Choledochal cyst with anomalous arrangement of the pancreaticobiliary duct is frequently associated with acute pancreatitis. Inferior head resection of the pancreas removed the common channel which could be the cause of relapsing pancreatitis. Thus, inferior head resection can play a role in the management of choledochal cyst with chronic pancreatitis.