Superficial and Deep Vein Thrombosis Associated With Congenital Absence of the Infrahepatic Inferior Vena Cava in a Young Male Patient

The hypothesis for DVT in patients with AIVC is that venous drainage of the lower limbs is inadequate, leading to venous stasis and thrombosis. All young patients presenting with idiopathic DVT should be investigated for inferior vena cava anomalies with computed tomography if ultrasound does not visualize the inferior vena cava.