What is the commonest type of cholecystoenteric fistula?
Cholecystoduodenal fistula is by far the most common.
What the name given to the duodenal obstruction by a gallstone secondary to a cholecystoenteric fistula?
Bouveret syndrome.
Arrows indicate the fistulous communication between the gallbladder and the duodenum (cholecystoduodenal fistula).