Cause of hemobilia are all except

Hemobilia Bleeding into the biliary tract from an abnormal aerial source to intrahepatic biliary tract fistula Poal venous bleeding into the biliary tree is rare, minor and selflimited Aerial hemobilia is the most common source Etiology Trauma : Iatrogenic (PTC) is the most common cause, blunt trauma is more common cause than penetrating trauma Gallstones Vascular pathology : Aneurysm, angiodysplasia, Parasitic infestation, liver abscess, cholangitis Ref: Sabiston 20th edition Pgno :1472-1474