Azygous continuation of the IVC is when the IVC is interrupted below the hepatic vein, and venous return beyond this point is restored by the azygos and hemiazygos veins, which drain into the superior ...

There was agenesis of the inferior vena cava in the subhepatic suprarenal segment, with venous return from the lower venous system ensured by slightly ectasic azygos/hemiazygos veins, which drained ...