Résumé
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.
Sujets)
Humains , Femelle , Sujet âgé , Tumeurs des glandes sudoripares/imagerie diagnostique , Porome/imagerie diagnostique , Porocarcinome eccrine/imagerie diagnostique , Tumeurs des glandes sudoripares/anatomopathologie , Biopsie , Dermoscopie/méthodes , Diagnostic différentiel , Porome/anatomopathologie , Porocarcinome eccrine/anatomopathologie , JambeRésumé
Abstract: Poroid neoplasms are benign epithelial proliferations with eccrine sweat gland differentiation. They are a challenging diagnosis because of the clinical heterogeneity, being able to mimic several malignant neoplasms. They are classified into classic poroma, hidroacanthoma simplex, dermal duct tumor and poroid hidradenoma. Association of histological subtypes occurs in more than 25% of cases. We report a case of a combined poroid neoplasia of classical poroma and poroid hidradenoma, reviewing its dermatoscopic features.