The Japanese Journal of Dermatology
Online ISSN : 1346-8146
Print ISSN : 0021-499X
ISSN-L : 0021-499X
Volume 126 , Issue 2
Showing 1-3 articles out of 3 articles from the selected issue
Original Articles
  • Michiko Hasegawa, Atsushi Tamura
    2016 Volume 126 Issue 2 Pages 157-162
    Published: February 20, 2016
    Released: February 22, 2016
    Verrucous porokeratosis is a rare variant of porokeratosis characterized by the raised patch showing multiple cornoid lamellae with epidermal hyperplasia. In this paper, we report a case of verrucous porokeratosis arising in the buttock. The patient was a 37-year-old man with a 21×17 mm, reddish keratotic plaque on the right buttock near the gluteal cleft. Histopathological examination of the resected specimen showed acanthosis and verrucous hyperplasia with prominent broad, confluent and multiple cornoid lamellae. Epidermal hyperplasia with multiple cornoid lamellae was present throughout the entire lesion. We reviewed the current literature on verrucous porokeratosis and speculated that this rare variant might have a higher risk of malignant transformation than that of the other types of porokeratosis.
    Download PDF (733K)