<prompt> Budd- chiari syndrome is characterised by ?Hepatic veno-occlusive diseaseHepatomegalyPoal vein obstructionAll  <response>: Ans. is b i.e.,Hepatomegalyo Budd-chiari syndrome is the clinical picture caused by occlusion of the hepatic vein or inferior vena cava. o It presents with classical triad of abdominal pain, ascites and hepatomegaly.Option a requires some explanation here read below.o Though, there is occlusion of hepatic vein in Budd - Chiari syndrome , it is not hepatic occlusive disease. o Hepatic venous outflow obstruction is divided into :-.1Hepatic vein thrombosis and IVC thrombosis :- Budd- chiari syndromeii Veno-occlusive disease sinusoidal obstruction syndrome :- It is a condition in which some of the small veins in the liver are blocked. It is a complication of high dose chemotherapy given before a bone marrow transplantation BMT. 