Which procedure establishes a new connection between the common bile duct and the duodenum?

Choledochoduodenostomy is the procedure that establishes a direct connection between the common bile duct and the duodenum. This surgical technique is typically performed to facilitate the drainage of bile into the duodenum when there is an obstruction in the distal bile duct or to bypass other complications associated with bile flow, such as gallstones or strictures.

In this procedure, the common bile duct is anastomosed (surgically connected) directly to the first part of the duodenum, allowing bile to flow freely into the intestine. This approach can help alleviate symptoms associated with biliary obstruction and is particularly useful in certain clinical scenarios where other forms of biliary drainage are not feasible.

Other procedures listed do not establish a connection between the common bile duct and the duodenum. Hepaticojejunostomy connects the common bile duct to the jejunum, cholecystectomy involves the removal of the gallbladder, and pancreaticoduodenectomy (also known as the Whipple procedure) involves the removal of the head of the pancreas along with parts of the small intestine, bile duct, and sometimes the gallbladder.