Gamuts

Biliary-enteric fistula

Pneumobilia is the presence of gas in the biliary system. It is typically detected by ultrasound or a radiographic imaging exam, such as CT, or MRI. It is a common finding in patients that have recently undergone biliary surgery or endoscopic biliary procedure. [Source: Wikipedia ]

May Cause
Gastrointestinal tract fistula
May Be Caused by
 Common
Cholecystitis
Gallstone fistula from gallbladder or bile duct
Malignant neoplasm of bile duct
Malignant neoplasm of gallbladder
Malignant neoplasm of intestine
Malignant neoplasm of pancreas
Postoperative state
 Uncommon
Common duct entry into duodenal diverticulum
Diverticulitis of duodenum or hepatic flexure of colon
External or iatrogenic trauma
Granulomatous disease of duodenum or colon
Hydatid disease
Incompetent sphincter
Liver abscess
Passage of common duct stone
Peptic ulcer perforation into biliary tract
Physiologic reflux at ampulla

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