The main pancreatic duct merges with the bile duct to form the ampulla of Vater (a widening of the duct just before it enters the duodenum). The pancreas is an integral part of the digestive system.

1A). A 2-cm sphincteroplasty with ampullary biopsy was performed, but since little pancreatic secretion appeared to escape, an attempt was made to secure drainage by distal pancreatectomy.