This fold has the appearance of an elevation, which terminates as a papilla, the greater duodenal papilla (papilla duodeni major). The opening of the conjoined common bile duct and the pancreatic duct is on the papilla. This explains the name of the dilatation found immediately proximal to the opening, the hepatic pancreatic ampulla. Proximal to the greater duodenal papilla is a smaller duodenla papilla (papilla duodeni minor) (the accessory pancreatic  duct opens on it ).Dermatology Billing Services will help in the appropiate reimbursement and collections, stay with HIPAA compliance and get more collections.