Computed tomographic cavo-urography: lower-extremity contrast infusion simultaneous with computed tomography of the retroperitoneum.

Successful opacification and distention of the inferior vena cava was obtained simultaneously with computed tomography by contrast infusion through a lower-extremity vein. Images obtained by this method displayed retroperitoneal anatomical relationships to better advantage, permitting more accurate interpretation of the upper retroperitoneum, particularly in lymphoma.