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Intradermal Melanocytic Nevus With Prominent Schwannian Differentiation

 

作者: George Kroumpouzos,   Lisa Cohen,  

 

期刊: The American Journal of Dermatopathology  (OVID Available online 2002)
卷期: Volume 24, issue 1  

页码: 39-42

 

ISSN:0193-1091

 

年代: 2002

 

出版商: OVID

 

关键词: Melanocytic nevus;Schwann cell;Verocay body

 

数据来源: OVID

 

摘要:

Features of peripheral nerve sheath differentiation such as neuroid cords, nerve corpuscles, fascicle-like structures, and, exceptionally, palisading have been reported in melanocytic nevi. We report an intradermal melanocytic nevus with prominent Verocay-like bodies. The upper portion of the neoplasm was composed of typical round intradermal nevus cells, many of which were pigmented. Within the deeper portion, there was a nonpigmented spindle cell proliferation with prominent Verocay bodies, simulating a neurilemmoma. Typical nevus nests merged with neurilemmoma-like areas. The entire lesion stained positively for S-100 and Mart-1 proteins and negatively for HMB-45 stain. Diffuse Mart-1 positivity excluded a collision of a melanocytic lesion with a neurilemmoma. The histopathologic features of this nevus further support a close relation between nevus cells and Schwann cells.

 

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