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Updated: Jan 24, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
Published on: May 16, 2025
The transition between a poroma and a porocarcinoma evidenced by the dermoscopy
Juliana Uchiyama1, Márcio Martins Lobo Jardim1, Neusa Yuriko Sakai Valente1
1Department of Dermatology, Hospital do Servidor Estadual de São Paulo, São Paulo (SP), Brazil.
Abstract:
Eccrine porocarcinoma (EPC) is a rare malignant skin tumor. The dermoscopy of invasive EPC reveals focal presence of whitish-pink, structureless areas surrounded by pinkish-white halos. In an eccrine poroma (EP), such areas present diffuse distribution in the "frog- eggs" pattern. We reported an EPC in situ that presents a transitional dermoscopy pattern between EP and invasive EPC. We found a diffuse distribution; whitish-pink, structureless areas surrounded by pinkish-white halos; a central exulceration and a polymorphic vascular pattern.
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