Agenesis of the inferior vena cava and antithrombin III deficiency associated with recurring venous thrombosis

Abnormalities of vena cava inferior are rare malformations and are often discovered by chance. While patients with duplication or left-sided position of the vena cava inferior rarley become clinically apparent the agenesis of the vena cava is associated with an increased rate of deep vein thrombosis. We report a 36 year-old man with recurrent venous thrombosis in which a computer thomography the suspected diagnosis of vena cava inferior agenesis secures and thus a lifelong anticoagulation indicates.