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Updated: Jun 6, 2026

A Syngeneic Mouse Model of Metastatic Renal Cell Carcinoma for Quantitative and Longitudinal Assessment of Preclinical Therapies
Published on: April 12, 2017
Primary renal sclerosing epithelioid fibrosarcoma: A case report
Faisl Alslimah1, Maher Moazin1, Abdulrahman Alshehri1
1Department of Urology, King Fahad Medical City, Riyadh, Saudi Arabia.
None:
Sclerosing epithelioid fibrosarcoma (SEF) is a rare variant of fibrosarcoma that primarily arises in the deep soft tissue of the extremities and trunk. Primary SEF in the visceral organs is rare, and only a few cases have been reported. A 20-year-old man was diagnosed with primary renal SEF metastatic to the lymph nodes and bone, which was managed with open right radical nephrectomy and ongoing chemotherapy. Immunohistochemical staining for MUC-4, vimentin, BCL-2, and EMA was positive in tumor cells. Next-generation sequencing revealed the presence of EWSR-CREB3L1 gene fusions and SMARCB1 rearrangement in exon 6.
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