“…Diseases causing thrombotic hepatic venous outflow obstruction (primary BCS) include: Hypercoagulability disorders (Figure 1 ) (factor V Leiden mutation[ 15 , 16 ], protein C or S and antithrombin-III deficiency), infections/sepsis, oral contraceptive therapy[ 17 - 19 ], pregnancy and post-partum, chronic inflammatory or autoimmune diseases (antiphospholipid syndrome, Behçet, systemic erythematous lupus), mye-loproliferative disorders (polycythemia vera, essential thrombocythemia, myelofibrosis, and paroxysmal nocturnal hemoglobinuria[ 20 , 21 ]), dehydration, chemoradiotherapy, sickle cell disease, paraneoplastic syndromes or neoplastic thrombosis, leiomyosarcoma of the inferior vena cava, complication of liver transplantation[ 22 , 23 ], and total parenteral nutrition[ 24 ].…”