Retrocaval thymus

Last revised by Dr Owen Kang on 01 Aug 2018

Retrocaval thymus is defined as an ectopic location of thymus between the superior vena cava and great arteries. It is a rare finding and mostly asymptomatic.

Radiographic features

Plain radiograph
  • may mimic mediastinal mass or right upper lobe collapse 2
CT and MRI
  • soft tissue that is consistent in appearance with and contiguous with a normally positioned thymus 2

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