Abstract

Synovial sarcoma is a tumor of mesenchymal origin that is most commonly found in the extremities in close association with tendon sheaths, joint capsules, and bursae. Smith in 1927 coined the term synovioma, 1 and Knox in 1936 suggested the name synovial sarcoma. 2 However, Stuer in 1893 is credited with the first accurate description of this neoplasm. 3 Its resemblance to normal synovium was recognized early in the literature, but its origin from synovial tissues has never been substantiated. It is reported to be the fourth most common sarcomatous tumor behind malignant fibrous histiocytoma, liposarcoma, and rhabdomyosarcoma, with an 8% to 10% incidence among all malignant tumors of soft somatic tissues. 4 Nine percent of synovial sarcomas are situated in the head and neck. There have been two reported cases of synovial sarcoma arising in the temporomandibular joint; this report describes an additional case.

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