title: Diagnostically Challenging Epithelioid Soft Tissue Tumors.
abstract: In this article, we focus on the histologic features, differential diagnosis, and potential pitfalls in the diagnosis of epithelioid sarcoma, alveolar soft part sarcoma, clear-cell sarcoma, ossifying fibromyxoid tumor, and malignant extrarenal rhabdoid tumor. Numerous other soft tissue tumors also may have epithelioid variants or epithelioid features. Examples include epithelioid angiosarcoma, epithelioid malignant peripheral nerve sheath tumor, epithelioid gastrointestinal stromal tumor, and perivascular epithelioid cell tumor, among others.
authors: Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90077, USA.
authors: Aaron W
authors: AW
authors: James
authors: Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90077, USA. Electronic address: sdry@mednet.ucla.edu.
authors: Sarah M
authors: SM
authors: Dry
mesh_terms: D003937:Diagnosis, Differential; D018214:Fibroma, Ossifying / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D011379:Prognosis; D018335:Rhabdoid Tumor / Q000175:diagnosis / Q000473:pathology; D012509:Sarcoma / Q000175:diagnosis / Q000473:pathology; D018227:Sarcoma, Clear Cell / Q000175:diagnosis / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology
keywords: Alveolar soft part sarcoma; Clear-cell sarcoma; Epithelioid sarcoma; Malignant extrarenal rhabdoid tumor; Ossifying fibromyxoid tumor