Acquired

·        Myeloproliferative disorders

·        Antiphospholipid syndrome

·        Hyperhomocysteinaemia

·        Paroxysmal nocturnal haemoglobinuria

·        Malignancy

·        Pregnancy

·        Use of oral contraceptives C

Inherited

·        Factor V Leiden mutation

·        Prothrombin gene mutation

·        Antithrombin III deficiency

·        Protein C deficiency

·        Protein S deficiency

Tumour invasion

·        Hepatocellular carcinoma

·        Renal cell carcinoma

·        Adrenal carcinoma

Idiopathic

Other (uncommon causes) Autre (causes rares)

·        Behçet’s syndrome

·        Inferior vena caval webs

·        Aspergillosis

·        Hydatid disease

·        Traumatisme

·        Dacarbazine therapy

·        Sarcoidosis