[Vascular liver diseases].

Vascular liver diseases include a group of rare, even exceptional, diseases: portal vein thrombosis, obliterative portal venopathy and Budd-Chiari syndrome. Here we will discuss in detail the least rare, portal vein thrombosis, of which the main complication (when recanalization was not reached during the acute-phase) is esophageal variceal bleeding. However, a prothrombotic condition (including myeloproliferative syndrome) is often the cause of portal vein thrombosis. Thereby, in certain cases, a long-term anticoagulation is necessary despite the bleeding risk. Aside from these rare diseases, vascular and thrombotic involvement participate in the pathophysiology of cirrhosis, and anticoagulant treatment might be beneficial in some patients.