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. 2025 Mar 31;40(2):e746.
doi: 10.5001/omj.2025.81. eCollection 2025 Mar.

Porokeratosis Ptychotropica: A Clinical Note from Vietnam

Tuan Anh Vu  1 , Hoang An Nguyen  2 , Thien Nguyen  3
Affiliations

Porokeratosis Ptychotropica: A Clinical Note from Vietnam

Tuan Anh Vu et al. Oman Med J. .
No abstract available

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Figures

Figure 1
Figure 1
(a) Clinical image showing symmetrical, gray-brown, verrucous, non-pruritic lesions on the buttocks, with surrounding satellite lesions. (b) Histopathological image of a biopsy specimen showing marked hyperkeratosis and incomplete cornoid lamella, with minimal loss or reduction of the granular cell layer distributed along the length of the specimen. The epidermis exhibits irregular hyperplasia with scattered inflammatory cells and pigment incontinence in the dermis. Hematoxylin and eosin staining, magnification = 20 ×.
See this image and copyright information in PMC

References

    1. Jin Y, Wu T, Xuan X, Cao J, Chen S, Huang C. Porokeratosis ptychotropica: Case reports and literature review. Ann Dermatol Venereol 2025. Mar;152(1):103327. 10.1016/j.annder.2024.103327 - DOI - PubMed
    1. Veasey JV, Dalapicola MC, Lellis RF, Campaner AB, Manzione T da S, Rodrigues MC de FS. Porokeratosis ptychotropica: a rare manifestation with typical histological exam. An Bras Dermatol 2016;91(4):496-498. 10.1590/abd1806-4841.20164397 - DOI - PMC - PubMed
    1. Ryoo YW, Kim Y, Yun JM, Kim SA. Porokeratosis ptychotropica: a case report. J Yeungnam Med Sci 2023. Oct;40(4):423-425. 10.12701/jyms.2022.00549 - DOI - PMC - PubMed

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