Which procedure creates a connection between the bile duct and jejunum?

The correct answer is the procedure that creates a connection between the bile duct and the jejunum, which is known as choledochojejunostomy. This surgical procedure involves establishing an anastomosis, or a surgical connection, directly between the common bile duct and the jejunum, which is the second part of the small intestine. It is often performed in cases where there is a need to bypass an obstructed bile duct, such as in cases of cholangiocarcinoma or strictures.

In contrast, cholecystoduodenostomy involves creating a connection between the gallbladder and the duodenum, not the jejunum. Pancreatojejunostomy refers to connecting the pancreas to the jejunum, usually in cases of pancreatic surgery, such as a Whipple procedure, but it does not involve the bile duct. An ileostomy is a procedure that creates an opening from the ileum to the abdominal surface, allowing waste to exit the body; it bears no relation to the bile duct or jejunum connection. Thus, the focus on anastomosis involving the common bile duct and jejunum distinctly identifies choledochojejunostomy as the correct answer.