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:
- 1. Narváez JA, Narváez J, Ortega R et-al. Hypointense synovial lesions on T2-weighted images: differential diagnosis with pathologic correlation. AJR Am J Roentgenol. 2003;181 (3): 761-9. AJR Am J Roentgenol (full text) - Pubmed citation
- 2. France MP, Gupta SK. Nonhemophilic hemosiderotic synovitis of the shoulder. A case report. Clin. Orthop. Relat. Res. 1991;(262): 132-6. - Pubmed citation
- 3. O'connell JX. Pathology of the synovium. Am. J. Clin. Pathol. 2000;114 (5): 773-84. doi:10.1309/LWW3-5XK0-FKG9-HDRK - Pubmed citation
- 4. Boles CA, Ward WG. Loose fragments and other debris: miscellaneous synovial and marrow disorders. Magn Reson Imaging Clin N Am. 2000;8 (2): 371-90. - Pubmed citation