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A Case of Perineurioma

Other Title
Perineurioma 1예
Authors
이, 중선; 한, 재호; 김, 유찬
Citation
Korean journal of dermatology, 43(11):1529-1532, 2005
Journal Title
Korean journal of dermatology; 대한피부과학회지
ISSN
0494-4739
Abstract
Perineurial cells, which normally surround the nerve fascicles within a nerve, can be distinguished from Schwann cells by their immunoreactivity for epithelial membrane antigen and lack of reactivity for S-100 protein. Perineuriomas are uncommon, slowly growing, usually benign tumors composed of well-differentiated perineural cells. We experienced a case of perineurioma in a 44-year-old man. This tumor was a 2 cm sized subcutaneous non-tender movable mass on the left posterior popliteal area. Histologically, the tumor was a circumscribed but non-encapsulated lesion and composed of spindle cells with elongated bipolar cytoplasmic processes, fusiform nuclei, and well-defined palely eosinophilic cytoplasm. Immunohistochemically, most of the tumour cells stained positive with epithelial membrane antigen and vimentin, but failed to stain with S-100 protein, neurofilament, CD34, cytokeratin, chromogranin A, synaptophysin, and Bodian stain.
Keywords
PerineuriomaImmunohistochemistry
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Journal Papers > School of Medicine / Graduate School of Medicine > Dermatology
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