Primary Renal Sclerosing Epithelioid Fibrosarcoma With EWSR1::CREB3L1 Fusion: A Diagnostic Pitfall With a Comprehensive Review of Reported Patients.
Ayoub Nahal, Jessica Jahoda, Waleed Hassen et al.
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From the abstract
Sclerosing epithelioid fibrosarcoma (SEF) is a rare malignant soft tissue sarcoma with morphologic and molecular overlap with low-grade fibromyxoid sarcoma (LGFMS). Although most commonly arising in deep soft tissues, primary involvement of the kidney is exceptionally uncommon and represents a significant diagnostic pitfall.