Epidemiology

Etiology

Secondary to conditions associated with hypercoagulability (most common)
- Polycythemia vera (most common cause)
- Paraneoplastic thrombocytosis
- Pregnancy and postpartum period
- Clotting disorders (e.g., factor V Leiden thrombophilia, antiphospholipid syndrome)
Secondary to invasion or compression of the hepatic veins (less common)
- Hepatocellular carcinoma, renal carcinoma

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