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Case Reports
. 2017 Jul-Aug;92(4):550-552.
doi: 10.1590/abd1806-4841.20175719.

Concomitant poroma and porocarcinoma

Álvaro Abarzúa  1 , Sergio Álvarez-Véliz  2 , Catherina Moll-Manzur  3
Affiliations
Case Reports

Concomitant poroma and porocarcinoma

Álvaro Abarzúa et al. An Bras Dermatol. 2017 Jul-Aug.

Abstract

Eccrine poromas and porocarcinomas are adnexal tumors derived from the sweat duct epithelium. However, eccrine poroma is benign in nature, whilst eccrine porocarcinoma is regarded as its malignant counterpart. We report the case of a man who presented simultaneously with an eccrine poroma and eccrine porocarcinoma. Both lesions had no clear distinctive features, enhancing the need of high-level clinical suspicion together with surgical excision and histopathology for prompt diagnosis confirmation.

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Conflict of interest statement

Conflict of interest: none.

Figures

Figure 1
Figure 1
Eccrine poroma. Erythematous to violaceous dome-shaped nodule located on the chest
Figure 2
Figure 2
Eccrine porocarcinoma
Figure 3 A and B
Figure 3 A and B
Histopathology of Eccrine poroma. Nests of uniform small cuboidal poroid cells with monomorphic nuclei and narrow duct-like lumina lined by eosinophilic cuticles (A: Hematoxylin & eosin stain, X40. B: Hematoxylin & eosin, X100)
Figure 4 A and B
Figure 4 A and B
Histopathology of Eccrine porocarcinoma. Lobular infiltrative tumor composed of small cuboidal cells forming ductal lumina that extended into the dermis. Closer examination reveals atypical neoplastic cells with hyperchromatic nuclei and some mitotic figures (A: Hematoxylin & eosin stain, X40. B: Hematoxylin & eosin stain, X100)
See this image and copyright information in PMC

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