Recurrent pigmented villonodular synovitis of the temporomandibular joint

Abstract

Pigmented villonodular synovitis is a benign but locally aggressive extra-articular tumor arising from the synovial membrane of tendons and bursae occurring near a joint space. Rarely, pigmented villonodular synovitis can involve the temporomandibular joint, which is emphasized in this paper. Diffuse and localized types have been described in the literature. The diffuse type involves the entire synovial membrane and infiltrates adjacent structures, which tend to be more aggressive and associated with a higher rate of recurrence when compared with the localized type.

MR imaging findings for differentiating nonhemophilic hemosiderotic synovitis from diffuse-type tenosynovial giant cell tumor of the knee

“…D-TGCT usually shows contrast enhancement after injection of gadolinium-based contrast agent; therefore, contrastenhanced MR imaging is useful for the diagnosis of D-GCT [7,[17][18][19]. In the present study, all five patients with nonhemophilic HS showed minimal to mild enhancement of the thickened synovium with superficial linear enhancement, whereas all four patients with D-TGCT showed moderate to severe enhancement.…”