Synovial Cell Sarcoma of the Kidney: A Case Report

Abstract

Dalia M Badary and Reda A

Background: Primary renal sarcomas are rare neoplasm that accounts about 1% of malignant renal tumors. Prevelance of primary renal Synovial cell sarcoma is rare and comprise 1-3% of all malignant renal neoplasm. Synovial cell sarcoma overlaps with multiple spindle cell neoplasms affecting the kidney, this need immunohistochemical panel to can diagnose it. This paper reports a case of Renal Synovial cell sarcoma. We report a case of 32 year old female presented with presented by upper pole left kidney swelling. Computarized tomography (CT) revealed a heterogeneous, well marginated soft tissue mass 8x7 cm arising in the upper pole of left kidney with solid necrotic components and heterogeneous enhancement. Left radical nephrectomy was done.

Methods: The kidney was excised and gross examination revealed that upper pole of the kidney was replaced completely by grayish tan firm mass with cystic areas measuring 6x6x3 cm in diameter and shows areas of hemorrhage and necrosis. Microscopic evaluation and immunohistochemistry study were performed.

Results: The mass was Renal Synovial cell sarcoma.

Conclusion: Although Renal Synovial cell sarcoma is rarely diagnosed in kidney but it should be considered in the differential diagnosis of spindle cell tumors affecting the kidney and must be excluded by immunohistochemical studies as it has poor prognosis in the kidney

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