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비전형적인 임상양상을 보인 Palisaded Encapsulated Neuroma
조수익 ( Soo Lck Cho ),김진혜 ( Jin Hye Kim ),정보영 ( Bo Young Chung ),김정원 ( Jeong Won Kim ),김혜원 ( Hye One Kim ),박천욱 ( Chun Wook Park ),이철헌 ( Cheol Heon Lee ) 대한피부과학회 2012 대한피부과학회지 Vol.50 No.8
Palisaded encapsulated neuroma (PEN) is a rare, benign, cutaneous nerve sheath tumor, which usually appears as a solitary asymptomatic skin-colored papule, which usually affects the face of middle-aged adults. Here, we report a case of PEN with unusual clinical features in a 23-year-old female, developed on the back, accompanied with pain sensation. Histopathologically, it appeared as a well-circumscribed, encapsulated round nodule, consisted of uniform, broad, and interlacing fascicles of the spindle cells in the dermis. On immunohistochemical staining, the tumor cells of nodule were positive for S-100 protein and neural filaments, while the capsule of the nodule was focally positive for the epithelial membrane antigen.