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Papular epidermal nevus with "skyline" basal cell layer (PENS) following a Blaschko linear pattern
Elisa Faure1, Gianluca Tadini, Michela Brena
1Department of Dermatology and Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico di Milano, University of Milan, Milan, Italy.
Abstract:
Papular epidermal nevus with "skyline" basal cell layer (PENS), a variant of epidermal nevi, has recently been described as a small, round or polygonal papule, visible at birth or shortly thereafter, with characteristic histopathologic features. It has been considered a separate entity from keratinocytic nevi because no lesion observed thus far has followed any of the known archetypical mosaic patterns. Here we describe for the first time a PENS lesion following a linear distribution pattern along Blaschko's lines.
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