Synovial sarcoma of the hand.

Synovial sarcoma of the hand is a very rate tumor in an equally unusual location with a difficult histology of a fibrosarcoma combined with synovial-like areas that resemble joint endothelial lining. It has a poor prognosis prior to the current combined treatment of surgical ablation, radiation to the surgical field, and chemotherapy for microscopic metastases. It has an unexplained natural history of very late recurrence and distant spread, often 10 to 20 years following primary treatment.