Figure 2. (a) Axial CT of the pelvis, following injection of iv contrast medium, showing an apparent filling defect in the left external iliac vein (arrow) below the insertion of the renal vein. (b) CT showing the cranial extent of pseudothrombus in the left external iliac vein (arrow) above the insertion of the renal vein. (c) Scan demonstrating at a higher level than (b) that the inferior vena cava is opacified.

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