A paracaval lipoma can be a frequent finding on CT and can seen in up to 0.5% of examinations 1. It occurs at the medial aspect of the intrahepatic portion of the inferior vena cava (IVC) and represents pericaval fat appearing to invaginate into the IVC. This is thought to be due to volume averaging through inwards and upwards in-drawing of the posteromedial wall of the IVC as a result of negative pressure created within the thorax on inspiration 2.
There may be an association with cirrhosis 1.
- 1. Han BK, Im JG, Jung JW et-al. Pericaval fat collection that mimics thrombosis of the inferior vena cava: demonstration with use of multi-directional reformation CT. Radiology. 1997;203 (1): 105-8. Radiology (abstract) - Pubmed citation
- 2. Kandpal H, Sharma R, Gamangatti S et-al. Imaging the inferior vena cava: a road less traveled. Radiographics. 28 (3): 669-89. doi:10.1148/rg.283075101 - Pubmed citation
- 3. Kaufman LB, Yeh BM, Breiman RS et-al. Inferior vena cava filling defects on CT and MRI. AJR Am J Roentgenol. 2005;185 (3): 717-26. AJR Am J Roentgenol (full text) - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Lipoma of the IVC||✓|