AI Article Synopsis
- PVNS is a rare, non-cancerous condition that affects the lining of joints and can occur in areas like bursae and tendon sheaths, with extra-articular cases being particularly uncommon.
- A specific case of extra-articular PVNB in the pes anserinus bursa is documented, characterized by a painful mass in the leg, which was confirmed through MRI and biopsy.
- The patient underwent successful surgery with a smooth recovery and remains disease-free after two years, highlighting the importance of accurate diagnosis through clinical, radiographic, and histological methods.
Article Abstract
Pigmented villonodular synovitis (PVNS) is a rare, benign, proliferating disease affecting the synovium of joints, bursae, and tendon sheaths. Involvement of bursa (PVNB, pigmented villonodular bursitis) is the least common, and only few cases of exclusively extra-articular PVNB of the pes anserinus bursa have been reported so far. We report a case of extra-articular pes anserine PVNB along with a review of the literature. The lesion presented as a painful soft tissue mass in the medial part of the proximal leg. A magnetic resonance imaging showed areas of low to intermediate signals in all sequences and the lesion enhanced heterogeneously with contrast. Diagnosis was confirmed by an incisional biopsy, and an intralesional resection was performed. The postoperative course was uneventful, and the patient is free of disease with no functional deficit at 2 years followup. As with other rare lesions, clinical and radiographic findings in addition to histological examination are essential for correct diagnosis.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3114461 | PMC |
| http://dx.doi.org/10.1155/2011/491470 | DOI Listing |
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