Pneumobilia is seen in
Causes of pneumobilia Previous surgery (papillotomy, choledochojejunostomy, ERCP with sphincterectomy) Gallstone ileus Emphysematous cholecystitis Choledochoduodenal or cholecystocolic fistula Tracheobiliary fistula Suppurative cholangitis Mirriz's syndrome (Due to cholecystoenteric fistula) Ref: Sabiston 20th edition Pgno :1570
Gallstone ileus
TPN
Volvulus
Ruptured hydatid cyst
G.I.T