Anetodermic pilomatricoma

Journal of Cutaneous Pathology
Elemir M de SouzaEva-B Brocker

Abstract

A pilomatricoma, or Malherbe's calcifying epithelioma, is an uncommon tumor originating from hair matrix cells. It is clinically characterized by a solitary, firm nodule. As the skin overlying the pilomatricoma may change in color and texture, its clinical presentation can vary. We report an unusual case of pilomatricoma with associated anetoderma on the lower extremity of a 12-year-old girl. Histology revealed a thinned dermis replaced by myxomatous tissue between the surface and a deep-seated tumoral mass. This mass is formed of irregular islands of basaloid cells, shadow cells, calcified areas and discrete inflammatory and foreign-body reactions surrounding it. Anetodermic cutaneous changes may occur in pilomatricomas without histological evidence of triggering factors.

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Citations

Sep 4, 2012·Pediatric Dermatology·Takako Miura, Toshiyuki Yamamoto
May 8, 2015·Journal of Cutaneous Pathology·Moises J VelezWilma F Bergfeld
Aug 22, 2013·The Journal of Dermatology·Asako HatanoKazuhito Hayakawa
Jul 26, 2011·International Journal of Dermatology·Anastasia Alejandra Garrido-RíosJesús Borbujo-Martínez
May 18, 2013·International Journal of Dermatology·Erika NomuraToshiyuki Yamamoto
Jul 10, 2018·Pediatric Dermatology·Helena Jenkinson, Sirunya Silapunt
Jan 29, 2019·The American Journal of Dermatopathology·Irene Andrés-RamosLuis Requena
Aug 21, 2015·Journal of the European Academy of Dermatology and Venereology : JEADV·N M K SpieringsN K Goldstraw

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