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Paracaval lipoma

Paracaval lipoma (juxtacaval fat collection or pseudolipoma of the inferior vena cava) can be a frequent finding on CT and can be seen in up to 0.5% of examinations 1. Some even consider this as a normal variation 5. It occurs at the medial aspect of the intrahepatic portion of the inferior vena cava (IVC) above the caudate lobe and represents pericaval fat appearing to invaginate into the inferior vena cava. This is thought to be due to volume averaging through inwards and upwards in-drawing of the posteromedial wall of the inferior vena cava as a result of negative pressure created within the thorax on inspiration 2.

Epidemiology

Associations

It can be seen in patients with cirrhosis 4

Differential diagnosis

On imaging consider

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Article information

rID: 6755
Tag: ivc, rg_2015
Synonyms or Alternate Spellings:
  • Pseudolipoma of the inferior vena cava
  • Lipoma of the IVC
  • IVC lipoma
  • Paracaval lipomas
  • Juxtacaval fat collection

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Cases and figures

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