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. 2020 Apr 20;10(2):e2020036.
doi: 10.5826/dpc.1002a36. eCollection 2020.

Porocarcinoma From Preexisting Hidroacanthoma Simplex: Dermoscopic Findings

Vincenzo Maione  1 , Martina Perantoni  1 , Enzo Errichetti  2 , Tiziana Borra  3 , Piergiacomo Calzavara Pinton  1   4
Affiliations

Porocarcinoma From Preexisting Hidroacanthoma Simplex: Dermoscopic Findings

Vincenzo Maione et al. Dermatol Pract Concept. .
No abstract available

Keywords: dermoscopy; hidroacanthoma simplex; porocarcinoma.

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Conflict of interest statement

Competing interests: The authors have no conflicts of interest to disclose.

Figures

Figure 1
Figure 1
Clinical examination shows a well-demarcated plaque of 4.7 × 2.5 cm in size on the left leg, with a superimposed keratotic nodule at the periphery.
Figure 2
Figure 2
Polarized dermoscopy (×10) of the nodule reveals central crusting, faint/blurred polymorphous vessels (chalice-shaped [black arrow], dotted [white arrow], and linear [white circle]), and round-to-oval pink areas with different diameters surrounded by a peripheral white halo (box).
Figure 3
Figure 3
(A) Histology displays enlarged tumor cells with pale cytoplasm along with pleomorphic and hyperchromatic nuclei with mitoses but no evidence of dermis invasion (H&E, ×10). (B) Immunohistochemistry for p16 clearly marks the limits of porocarcinoma in relation to hidroacanthoma simplex (immunohistochemical stain for p16, ×10).
See this image and copyright information in PMC

References

    1. Suzaki R, Shioda T, Konohana I, Ishizaki S, Sawada M, Tanaka M. Dermoscopic features of eccrine porocarcinoma arising from hidroacanthoma simplex. Dermatol Res Pract. 2010;2010 192371. - PMC - PubMed
    1. Dong H, Zhang H, Liu N, Soyer HP. Dermoscopy of a pigmented apocrine porocarcinoma arising from a pigmented hidroacanthoma simplex. Australas J Dermatol. 2018;59(2):e151–e152. - PubMed

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