Siderotic synovitis
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Siderotic synovitis is a condition that can occur with chronic haemarthroses.
Pathology
ItSiderotic synovitis is characterised by rusty synovial pigmentation and hyperplasia but with an absence of foam cells and multinucleated giant cells which are seen in tenosynovial giant cell tumours.
Predisposing conditionsRisk factors
-
bleeding disorders
Radiographic features
MRI
May be seen as a focal or diffuse proliferation of the synovium. Signal characteristics can mimic tenosynovial giant cell tumours and include 1,4
T1: low signal
T2: low signal
gradient echo (GE):
showsblooming artifact
Differential diagnosis
On MRI consider:
-<p><strong>Siderotic synovitis</strong> is a condition that can occur with chronic <a href="/articles/haemarthoses">haemarthroses</a>.</p><h4>Pathology</h4><p>It is characterised by rusty synovial pigmentation and hyperplasia but with an absence of foam cells and multinucleated giant cells which are seen in <a href="/articles/pigmented-villonodular-synovitis">PVNS</a>.</p><h5>Predisposing conditions</h5><ul>-<li>bleeding disorders<ul><li>-<a href="/articles/haemophilia">haemophilia</a> - <a href="/articles/haemophilic-arthropathy">haemophilic arthropathy</a>-</li></ul>-</li>- +<p><strong>Siderotic synovitis</strong> is a condition that can occur with chronic <a href="/articles/haemarthoses">haemarthroses</a>.</p><h4>Pathology</h4><p>Siderotic synovitis is characterised by rusty synovial pigmentation and hyperplasia but with an absence of foam cells and multinucleated giant cells which are seen in <a href="/articles/tenosynovial-giant-cell-tumour-2" title="Tenosynovial giant cell tumour">tenosynovial giant cell tumours</a>.</p><h5>Risk factors</h5><ul>
-<a href="/articles/synovial-haemangioma">synovial haemangioma</a> <sup>3 </sup>- +<p>bleeding disorders</p>
- +<ul><li><p><a href="/articles/haemophilia">haemophilia</a> - <a href="/articles/haemophilic-arthropathy">haemophilic arthropathy</a></p></li></ul>
-</ul><h4>Radiographic features</h4><h5>MRI</h5><p>May be seen as a focal or diffuse proliferation of the synovium. Signal characteristics can mimic <a href="/articles/pigmented-villonodular-synovitis">pigmented villonodular synovitis (PVNS)</a> and include <sup>1,4</sup></p><ul>-<li>-<strong>T1: </strong>low signal </li>-<li>-<strong>T2:</strong> low signal</li>-<li>-<strong>gradient echo (GE): </strong>shows blooming</li>-</ul><h4>Differential diagnosis</h4><p>On MRI consider:</p><ul><li><a href="/articles/pigmented-villonodular-synovitis">pigmented villonodular synovitis</a></li></ul>- +<li><p><a href="/articles/synovial-haemangioma">synovial haemangioma</a> <sup>3</sup></p></li>
- +</ul><h4>Radiographic features</h4><h5>MRI</h5><p>May be seen as a focal or diffuse proliferation of the synovium. Signal characteristics can mimic <a href="/articles/tenosynovial-giant-cell-tumour-2" title="Tenosynovial giant cell tumour">tenosynovial giant cell tumours</a> and include <sup>1,4</sup></p><ul>
- +<li><p><strong>T1: </strong>low signal </p></li>
- +<li><p><strong>T2:</strong> low signal</p></li>
- +<li><p><strong>gradient echo (GE):</strong> <a href="/articles/blooming-artifact-mri" title="blooming artifact">blooming artifact</a></p></li>
- +</ul><h4>Differential diagnosis</h4><p>On MRI consider:</p><ul><li><p><a href="/articles/tenosynovial-giant-cell-tumour-2" title="Tenosynovial giant cell tumour">tenosynovial giant cell tumour</a></p></li></ul>
References changed:
- 1. Narváez J, Narváez J, Ortega R, De Lama E, Roca Y, Vidal N. Hypointense Synovial Lesions on T2-Weighted Images: Differential Diagnosis with Pathologic Correlation. AJR Am J Roentgenol. 2003;181(3):761-9. <a href="https://doi.org/10.2214/ajr.181.3.1810761">doi:10.2214/ajr.181.3.1810761</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/12933477">Pubmed</a>
- 2. France M & Gupta S. Nonhemophilic Hemosiderotic Synovitis of the Shoulder. A Case Report. Clin Orthop Relat Res. 1991;(262):132-6. - <a href="https://www.ncbi.nlm.nih.gov/pubmed/1984909">Pubmed</a>
- 3. O'Connell J. Pathology of the Synovium. Am J Clin Pathol. 2000;114(5):773-84. <a href="https://doi.org/10.1309/LWW3-5XK0-FKG9-HDRK">doi:10.1309/LWW3-5XK0-FKG9-HDRK</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/11068553">Pubmed</a>
- 4. Boles C & Ward W. Loose Fragments and Other Debris: Miscellaneous Synovial and Marrow Disorders. Magn Reson Imaging Clin N Am. 2000;8(2):371-90. - <a href="https://www.ncbi.nlm.nih.gov/pubmed/10819920">Pubmed</a>
- 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. <a href="http://www.ajronline.org/cgi/content/full/181/3/761">AJR Am J Roentgenol (full text)</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/12933477">Pubmed citation</a><div class="ref_v2"></div>
- 2. France MP, Gupta SK. Nonhemophilic hemosiderotic synovitis of the shoulder. A case report. Clin. Orthop. Relat. Res. 1991;(262): 132-6. - <a href="http://www.ncbi.nlm.nih.gov/pubmed/1984909">Pubmed citation</a><div class="ref_v2"></div>
- 3. O'connell JX. Pathology of the synovium. Am. J. Clin. Pathol. 2000;114 (5): 773-84. <a href="http://dx.doi.org/10.1309/LWW3-5XK0-FKG9-HDRK">doi:10.1309/LWW3-5XK0-FKG9-HDRK</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/11068553">Pubmed citation</a><div class="ref_v2"></div>
- 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. - <a href="http://www.ncbi.nlm.nih.gov/pubmed/10819920">Pubmed citation</a><div class="ref_v2"></div>
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Image 2 MRI (STIR) ( update )
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