Computed tomography of a thrombosed left anterior vena cava

A case of transposed (left) inferior vena cava (IVC) with a normal suprarenal IVC visible on computed tomography (CT) is presented. There is concomitant recanalized thrombosis of the left IVC with venous collaterals present. Caval anomalies, differential diagnosis of a left IVC, and CT demonstration of thrombosis of major abdominal venous structures and associated venous collaterals are discussed.