Abstract

Synovial sarcoma is uncommon, highly malignant soft tissue tumor that occurs most often in the deep soft tissue of lower and upper extremities. It almost never arise within the mediastinum and retroperitoneum. We present a case of retroperitoneal synovial sarcoma which was confirmed by microscopically sarcomatous growth of spindle cells, hyalinized vasculature, and some calcification. The treatment was performed by wide excision and radiotherapy.

• Keywords: Synovial sarcoma, Retroperitoaeum