The radiologic differential diagnosis included pigmented villonodular synovitis, synovial sarcoma, chondroma, osteochondroma, or a parotid lesion.
Although Chassaignac (1) was the first to describe the lesion in 1852, it was a landmark article by Jaffe et al (2) in 1941 that introduced the term pigmented villonodular synovitis.
In 1973, Lapayowker et al were the first to describe pigmented villonodular synovitis in the temporomandibular joint (in two patients).
Nearly all of the earlier cases of temporomandibular pigmented villonodular synovitis were preoperatively presumed to be parotid lesions.
Pigmented villonodular synovitis typically demonstrates low signal intensity because of the presence of hemosiderin, and bony erosion is typically seen.
Pigmented villonodular tenosynovitis of the temporomandibular joint.
Pigmented villonodular aynovitis of the temporomandibular joint.
Diffuse pigmented villonodular synovitis of the temporomandibular joint diagnosed by fine needle aspiration cytology.
Pigmented villonodular synovitis (PVS) of the temporomandibular joint (TMJ): A cast: report.
Fine-needle aspiration of pigmented villonodular synovitis of the temporomandibular joint masquerading as a primary parotid gland lesion Diagn Cytopathol 1997;16:47-50.
5-lb pigmented part reduced cycle time by 16 sec, or 23%, on a 500-ton molding machine, partly by allowing the hot runner's temperature to be cut from 490 F to 450 F.
3-lb, pigmented part resulted in a cycle-time reduction of 23 sec, or 30%.