Inferior vena cava interruption with renal vein collar continuation: CT and MRI appearance.

The CT and MRI appearance of an inferior vena cava (IVC) interruption with renal venous collar continuation is presented. CT and MRI identify and define venous anomalies without the need for invasive angiography. Knowledge of an anomalous IVC is important to the vascular and transplant surgeon as well as to the interventional radiologist.