A Case Report of Porokeratosis Ptychotropica without Genitogluteal Involvement

Authors

  • Ekkapap Puapermpoonsiri DIVISION OF DERMATOLOGY, DEPARTMENT OF MEDICINE, PHRAMONGKUTKLAO HOSPITAL BANGKOK, THAILAND.
  • Nattaporn Sampattavanich DIVISION OF DERMATOLOGY, DEPARTMENT OF MEDICINE, PHRAMONGKUTKLAO HOSPITAL BANGKOK, THAILAND.

Keywords:

Verrucous porokeratosis, porokeratosis ptychotropica, genitogluteal, cornoid lamella

Abstract

Porokeratosis ptychotropica is a rare hyperkeratotic verrucous variant of porokeratosis with preferable site at the genitogluteal area without typical keratotic rims as other types of porokeratosis. We report a very rare case of porokeratosis ptychotropica with no genitogluteal involvement. Our case was an elderly Thai man presented with multiple well defined hyperkeratotic verrucous plaques on the right knee, left leg and dorsum of both feet which was diagnosed as porokeratosis by the typical cornoid lamella in the histopathologic examination. Our patient had a favorable outcome from wide excision, oral acitretin, topical fluorouracil, and salicylic acid.

References

Lembo S, Panariello L, Nugnes L, Lembo C, Alaya F. Porokeratosis: Two Faces, One Family. Case Rep Dermatol 2009;1:52-5.

Otani Y, Katagiri K, Takeuchi Y, Oishi M, Shibuya H, Kokuba H, et al. A Case of Giant Porokeratosis with Vestiges of a Cornoid Lamella. The Journal of Dermatology 2005;32:894-8.

Simone CD, Paradisi A, Massi G, Proietti L,Capponi A, Amerio PL, et al. Giant verrucous porokeratosis of Mibelli mimicking psoriasis in a patient with psoriasis. J Am Acad. Dermatol 2007;57:665-8.

Raychaudhury T, Valsamma DP. Giant porokeratosis. Indian J Dermatol Venereol Leprol 2011;77:601-2.

Lucker GP, Happle R, Steijlen PM. An unusual case of porokeratosis involving the natal cleft: Porokeratosis ptychotropica. Br J Dermatol 1995;132:150-1.

D'souza P, Dhali TK, Arora S, Gupta H, Khanna U. Porokeratosis ptychotropica: a rare variant of porokeratosis. Dermatol Online J 2014;15:20.

Tiwary AK, Mishra DK. Giant verrucous porokeratosis with psoriasiform alteration: A rare entity with atypical clinic-histopathologic features. Indian journal of dermatopathology and diagnostic dermatology 2017;4:19-20.

Li JH, Yang ZH, Li B, et al. Squamous cell carcinoma arising from giant porokeratosis. Dermatol Surg 2011;37:855–7.

Lin JH, Hsu MM, Sheu HM, Lee JY. Coexistence of three variants of porokeratosis with multiple squamous cell carcinomas arising from lesions of giant hyperkeratotic porokeratosis. J Eur Acad Dermatol Venereol 2006;20:621-3.

Bozdağ KE, Biçakçi H, Ermete M. Giant porokeratosis. Int J Dermatol 2004;43:518-20.

Downloads

Published

2020-12-09

How to Cite

Puapermpoonsiri, E., & Sampattavanich, N. (2020). A Case Report of Porokeratosis Ptychotropica without Genitogluteal Involvement. Thai Journal of Dermatology, 36(4), 186–190. Retrieved from https://he02.tci-thaijo.org/index.php/TJD/article/view/245490