Epidermal Nevus



Epidermal Nevus


Jessica M. Comstock, MD










Epidermal nevus is shown presenting as a warty, broad band of hypopigmented growth over the dorsal forearm and extensor wrist, extending onto the back of this child’s hand. (Courtesy Univ. of Utah Dept. of Dermatology.)






Low magnification shows a common type of epidermal nevus with prominent hyperkeratosis image, papillomatosis image, and acanthosis image.


TERMINOLOGY


Synonyms



  • Nevus verrucosus



    • Localized wart-like variants


  • Nevus unius lateris



    • Long linear lesions on extremities


  • Ichthyosis hystrix



    • Large bilateral lesions on trunk


Definitions



  • Developmental malformation of epidermis with hyperplasia of keratinocytes


  • Specific entity that does not include adnexal malformations or appendageal tumors such as organoid/sebaceous nevus


ETIOLOGY/PATHOGENESIS


Epidermal Nevus Syndrome

Jul 8, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Epidermal Nevus

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