<prompt> Most common cause of Budd Chiari syndrome is:IdiopathicValves in hepatic veinsHepatocellular carcinomaThrombosis of hepatic veins  <response>: Answer is D Thrombosis of hepatic veins Most common cause of Budd Chiari Syndrome is hepatic vein obstruction Its the common cause of hepatic vein obstruction causing Budd Chiari Syndrome is thrombosis of hepatic veins. 