<prompt> Budd chiari syndrome can be caused by -Thrombosis of hepatic veinsPolycythemiaDrinking Herbal teaAll  <response>: Ans. is d i.e., AllBudd-chiari syndrome o 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.Causes of Budd-chiari syndromeHepatic vein thrombosisMyeloproliferative disorders PolycythemiaInherited disorder of coagulation -- deficiency of antithrombin, protin C S.o Antiphospholipid syndromeo Paroxysmal nocturnal hemoglobinuriao Intraabdominal cancers, paicularly hepatocellular carcinoma.Pregnancyo Oral contraceptives estrogen Progesteron 2. Membranous web in inferior vena cova. I am not sure about option c 