Coexistence of left-sided inferior vena cava, deep vein thrombosis of the upper and lower extremities and prothrombotic polymorphisms in a young patient: a case report.

A literature review suggests an interaction between an anomaly of the inferior vena cava and thrombophilia in the pathogenesis of deep vein thrombosis. Genetic thrombotic abnormalities have been found in some of the subjects having venous thromboembolic diseases. We report a case of a young man presenting with venous thrombosis of the upper and lower extremities, left-sided vena cava inferior and with combination of heterozygosity of the mutation of the genes Methylenetetrahydrofolate reductase 677 and Factor V 1691.