Objectives: A case is reported in which synovial sarcoma (SS) is arising within the infratemporal fossa.
Design And Setting: Case report and literature review from an academic tertiary referral practice.
Results: A 46-year-old white woman presented with a 1-month history of having paresthesias on the left side of her head. There was a sensory deficit at the level of the third division dermatome (V3) of the fifth left cranial nerve. Computed tomography (CT) and magnetic resonance imaging revealed a mass centered in the left infratemporal fossa. Fine needle aspiration (FNA) revealed a spindle cell neoplasm. An endoscopic, transantral biopsy of the mass revealed SS. The SS in the infratemporal fossa was surgically removed en bloc. The patient had postoperative chemoradiotherapy and is free of disease at 1 year from completion of treatment.
Conclusions: This is the first reported case from the United States of America of SS located in the infratemporal fossa and the third case to be reported in the English language literature.
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