Siderotic synovitis

Siderotic synovitis is a condition that can occur with chronic haemarthrodes.

It is characterized by rusty synovial pigmentation and hyperplasia but with an absence of foam cells and multinucleated giant cells which are seen in PVNS.

May be seen as a focal or diffuse proliferation of the synovium. Signal characteristics can mimic pigmented villonodular synovitis (PVNS) and include 1,4

  • T1: low signal 
  • T2: low signal
  • gradient echo (GE): shows blooming

On MRI consider:

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Article information

rID: 11056
Synonyms or Alternate Spellings:
  • Haemosiderotic synovitis
  • Hemosiderotic synovitis

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Cases and figures

  • Case 1
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  • Case 2: haemophilic arthropathy
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