What is the size of CBD?
Correct Answer: 7.5 cm long
Description: The common bile duct is about 7 to 11 cm in length and 5 to 10 mm in diameter. The upper third (supraduodenal poion) passes downward in the free edge of the hepatoduodenal ligament, to the right of the hepatic aery and anterior to the poal vein. The middle third (retroduodenal poion) of the common bile duct curves behind the first poion of the duodenum and diverges laterally from the poal vein and the hepatic aeries. The lower third (pancreatic poion) curves behind the head of the pancreas in a groove, or traverses through it and enters the second pa of the duodenum. The common bile duct runs obliquely downward within the wall of the duodenum for 1 to 2 cm before opening on a papilla of mucous membrane (ampulla of Vater), about 10 cm distal to the pylorus. Ref :Oddsdottir M. (2010). Chapter 32. Gallbladder and the Extrahepatic Biliary System. In T.R. Billiar, D.L. Dunn (Eds), Schwaz's Principles of Surgery, 9e.
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