Fissural pseudotumour

Fissural pseudotumour or vanishing tumour seen in congestive heart failure.

  • “Vanishes” after treatment with diuretic

Important to distinguish from other causes of consolidation !

  • Round pneumonia
  • Malignancy

Bottom line?

  • The key is the border of the consolidation.
  • If the border is poorly defined, it means that the consolidation in intraparenchymal. Most likely infection or malignancy.
  • If  the border is well defined, it means that the consolidation in surrounded by pleura. Intrafissural malignancy or infection is really rare.
  • Other feature: tapering end of the “tumour”.

Other ddx for “pseudotumour”

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