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Benign external compression of the inferior vena cava associated with thrombus formation

¹ Department of Clinical Imaging, Derriford Hospital, Plymouth, Devon PL6 8DH and ² Department of Radiology, Royal Cornwall Hospital, Truro, Cornwall TR1 3LJ, UK

View larger version (111K): [in a new window]   Figure 1. (a) CT of the abdomen showing a simple, but very large cyst within the right lobe of the liver. The inferior vena cava (IVC) is barely visible as it is compressed to near total occlusion. (b) Initial inferior vena cavogram showing both the extent of luminal narrowing of the IVC, and the cephalic extent of the thrombus within. (c) Following deployment of the Tulip filter, and subsequent cyst aspiration, the hepatic IVC lumen has now returned to normal appearances.

View larger version (101K): [in a new window]   Figure 2. (a) CT pulmonary angiogram showing a filling defect due to thrombus within the right atrium (arrows) and enlarged right heart chambers. (b) Post operative inferior vena cavogram demonstrating the degree of inferior vena cava (IVC) luminal compression at the level of the renal veins.