Introduction
Synovial sarcoma is the fourth most common sarcoma of the soft tissue,following liposarcoma,fibrous histiocytoma and rhabdomyosarcoma.With more prevelance in men than women.Most of the SS cases are located in extrimities,predominantly lower extremites(1, 2). especially near large joints around the knee and thigh(3). Synovial sarcoma has an annual incidence of 2.5 per 100,000(4). Intracranial synovial sarcoma is very uncommom and has been reported as a metastasis lesion from synovial sarcoma in other parts of the body (3, 5-11).In this study, We report a case with no obvious primary extracranial pathology, with recurrent primary intracranial synovial sarcoma,which has been very rarely reported in literature.