RT Book, Section A1 Chandrasoma, Parakrama A1 Taylor, Clive R. SR Print(0) ID 189997 T1 Chapter 44. The Extrahepatic Biliary System T2 Concise Pathology, 3e YR 1998 FD 1998 PB The McGraw-Hill Companies PP New York, NY SN 9780838514993 LK accessphysiotherapy.mhmedical.com/content.aspx?aid=189997 RD 2024/04/20 AB The extrahepatic biliary system is composed of the bile ducts and the gallbladder (Figure 44-1). In 70% of patients, the common bile duct and pancreatic duct join at the ampulla of Vater and have a common duodenal opening. In the other 30%, the pancreatic and bile ducts open separately. The common bile duct has a luminal diameter of 0.5–0.7 cm in the adult.