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Porokeratosis ptychotropica: a rare manifestation with typical histological exam.
An Bras Dermatol. 2016 Jul-Aug; 91(4):496-8.AB

Abstract

Porokeratosis is a disorder of epidermal keratinization characterized clinically by a distinctive ridge-like border, and histologically by cornoid lamellae. The known clinical variants of porokeratosis are: classic porokeratosis of Mibelli, disseminated superficial (actinic) porokeratosis (DSAP), porokeratosis palmaris et plantaris disseminata, linear porokeratosis and punctate porokeratosis. In 1995, a seventh form was described as porokeratosis ptychotropica: a verrucous form resembling psoriasis involving the gluteal cleft presenting on the histological exam multiple cornoid lamellae. There are very few reports in the literature of this clinical variant. The present study describes the case of a healthy male presenting gluteal hyperkeratotic plaques for 22 years. He had been to several dermatologists, none of them had achieved a definitive diagnosis. We present a typical clinical presentation and its dermoscopy findings, in addition to histological examination that confirmed the diagnosis.

Authors+Show Affiliations

Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.

Pub Type(s)

Case Reports

Language

eng

PubMed ID

27579746

Citation

Veasey, John Verrinder, et al. "Porokeratosis Ptychotropica: a Rare Manifestation With Typical Histological Exam." Anais Brasileiros De Dermatologia, vol. 91, no. 4, 2016, pp. 496-8.
Veasey JV, Dalapicola MC, Lellis RF, et al. Porokeratosis ptychotropica: a rare manifestation with typical histological exam. An Bras Dermatol. 2016;91(4):496-8.
Veasey, J. V., Dalapicola, M. C., Lellis, R. F., Campaner, A. B., Manzione, T. d. a. . S., & Rodrigues, M. C. (2016). Porokeratosis ptychotropica: a rare manifestation with typical histological exam. Anais Brasileiros De Dermatologia, 91(4), 496-8. https://doi.org/10.1590/abd1806-4841.20164397
Veasey JV, et al. Porokeratosis Ptychotropica: a Rare Manifestation With Typical Histological Exam. An Bras Dermatol. 2016 Jul-Aug;91(4):496-8. PubMed PMID: 27579746.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Porokeratosis ptychotropica: a rare manifestation with typical histological exam. AU - Veasey,John Verrinder, AU - Dalapicola,Monique Coelho, AU - Lellis,Rute Facchini, AU - Campaner,Adriana Bittencourt, AU - Manzione,Thiago da Silveira, AU - Rodrigues,Maria Clarissa de Faria Soares, PY - 2015/01/22/received PY - 2015/03/30/accepted PY - 2016/9/1/entrez PY - 2016/9/1/pubmed PY - 2017/5/4/medline SP - 496 EP - 8 JF - Anais brasileiros de dermatologia JO - An Bras Dermatol VL - 91 IS - 4 N2 - Porokeratosis is a disorder of epidermal keratinization characterized clinically by a distinctive ridge-like border, and histologically by cornoid lamellae. The known clinical variants of porokeratosis are: classic porokeratosis of Mibelli, disseminated superficial (actinic) porokeratosis (DSAP), porokeratosis palmaris et plantaris disseminata, linear porokeratosis and punctate porokeratosis. In 1995, a seventh form was described as porokeratosis ptychotropica: a verrucous form resembling psoriasis involving the gluteal cleft presenting on the histological exam multiple cornoid lamellae. There are very few reports in the literature of this clinical variant. The present study describes the case of a healthy male presenting gluteal hyperkeratotic plaques for 22 years. He had been to several dermatologists, none of them had achieved a definitive diagnosis. We present a typical clinical presentation and its dermoscopy findings, in addition to histological examination that confirmed the diagnosis. SN - 1806-4841 UR - https://www.unboundmedicine.com/medline/citation/27579746/Porokeratosis_ptychotropica:_a_rare_manifestation_with_typical_histological_exam_ L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/27579746/ DB - PRIME DP - Unbound Medicine ER -