Differential diagnosis of causes of Budd Chiari Syndrome ( hepatic vein obstruction)

​Differential diagnosis of causes of Budd Chiari Syndrome ( hepatic vein obstruction) :
-caval webs 
-neoplasm compressing hepatic vein 
-myeloproliferative disease such as polycythemia vera
-Behcet’s disease
-right sided congestive heart failure 
-constrictive pericarditis 
-paroxysmal nocturnal hemoglobinuria 
-hypercoagulable state 
-pregnancy 
-oral contraceptives 
-“bush teas” pyrrolizidine alkaloids
-post bone marrow transplantation