Pigmented Villonodular Synovitis (Subscribe)  

The authors successfully treated a rare case of pigmented villonodular synovitis (PVNS) that originated from the lumbar facet joint (L4-5). A 43-year-old man presented with a complaint of left severe sciatica causing difficulty in walking. Magnetic resonance imaging (MRI) demonstrated an extradural mass on the left side at L4 and...

Illustrated cases. See also on this site -
Pigmented villonodular synovitis, nodular form
Pigmented villonodular tenosynovitis

Pigmented Villonodular synovitis - Discussion: - pigmented villonodular synovitis is a slow growing, benign, and locally invasive tumor of the synovium; - location: most often involves the knee (also in hip, ankle, elbow ect.); ...

Torsion and subsequent ischaemia is a well-recognised cause of symptoms and morbidity in general surgery. We present three cases of solitary pigmented villonodular tumours of the knee which were found to have undergone torsion. We believe these to be the first intra-articular tumours in which torsion has been reported.
Torsion of...

Case report: A patient presented with severe treatment resistant PVNS of the right knee joint. Several conventional treatment regimens, including open surgical synovectomy and intra-articular injections of yttrium-90 (90Y) failed to control the disease. After finding marked tumour necrosis factor α (TNFα) expression in arthroscopic synovial tissue samples, treatment with...