The nevus sebaceous of Jadassohn usually affects the face or scalp. It tends to evolve in three stages, and the final stage is characterized by the appearance of tumours. We present the case of a facial nevus sebaceous of Jadasshon in which a basal cell carcinoma developed. We also explore the diagnosis of this disease, which was established through dermoscopy, and propose using this technique in the clinical follow-up of this type of hamartoma, thereby allowing the early detection of cancer development.
Argyria is a rare disease caused by prolonged skin contact with silver. Localized cases have been described regarding the use of topical medications, and trauma with objects containing this metal such as acupuncture needles and jewelry. Clinically, a macule or a patch, round or oval, appears in the infected area, with a characteristic bluey-gray color. To our knowledge this is the first time that this clinical condition has been described through the use of dermoscopy.
Targetoid hemosiderotic hemangioma (THH) or hobnail hemangioma (HH) is a benign vascular lesion that presents with the classical clinical presentation of a ring-shaped tumor having a targetoid appearance, with a central purple-brown papule surrounded by a thin pale area and an ecchymotic ring on the outside. Dermoscopic features and patterns of HH have been documented and have proven to be sufficient to establish a clinical diagnosis in many cases.
We present a facial lesion in which both the clinical presentation and dermoscopy were atypical. The presence of arborizing vessels in the dermoscopic pattern, never before described for this lesion, led us to the diagnosis of basocellular carcinoma (BCC). We also report the changes in this pattern experienced over 12 months of progression and their correlation with the histopathologic findings.
A síndrome de KID é uma displasia ectodérmica congênita rara que afeta a pele, o epitélio da córnea e o ouvido interno. Clinicamente, observam-se placas de eritroqueratodermia na face e pregas, geralmente presentes desde o nascimento, a surdez neurossensorial severa e bilateral, e a vascularização córnea associado à queratite de evolução progressiva à qual surge após as alterações cutâneas e auditivas na puberdade. Face ao quadro surdez, às infecções cutâneas, ao risco de cegueira e à degeneração maligna, o diagnóstico precoce da síndrome é fundamental, bem como o seguimento clínico periódico e o aconselhamento genético
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