Schwannoma, also known as a neurilemmoma, neurinoma, and perineural fibroblastoma, can be either a benign or malignant tumor, arising from the associated nerve sheath. A retroperitoneal malignant schwannoma is a rare tumor. Immunohistochemical staining for S-100, leucine-7 and the myelin basic protein is useful for diagnosis. Here we report a case of retroperitoneal malignant schwannoma with a brief review of the literatures.
Diagnosis
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Myelin Basic Protein
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Neurilemmoma*