Porokeratosis simulating Bowen's disease on dermoscopy

Abstract Porokeratosis is a disorder of epidermal keratinization characterized by the presence of annular hyperkeratotic plaques. Its etiopathogenesis is not yet fully understood, but a relationship with immunosuppression has been reported. Dermoscopic examination revealed a classic yellowish-white ring-like structure that resembled “volcanic crater contour” – the so-called cornoid lamella. We describe a case of porokeratosis in a female patient with chronic lymphedema, which was similar to Bowen’s disease due to the many glomerular vessels seen on clinical examination and dermoscopy.

Nevus lipomatosus cutaneous superficialis

Abstract We report a case of nevus lipomatosus cutaneous superficialis of Hoffman-Zurhelle (NCLS), with multiple lesions, in a ten-year-old child. The NLCS is considered rare. The classical clinical presentation is characterized by multiple skin-colored or yellowish papules and nodules, which can have a linear distribution. Histologically, it is characterized by the presence of mature ectopic adipocytes in the dermis. The main therapeutic option is surgical excision. The classical Nevus lipomatosus cutaneous superficialis is reported in this case.

Dermatofibroma simulating seborrheic keratosis dermoscopically

Abstract: Dermatofibroma is a frequent benign tumor of easy clinical diagnosis in most cases, but that can mimic other dermatoses. Dermoscopy may help to define the diagnosis and its classical pattern is a central white area, similar to a scar, surrounded by a discrete pigment network. However, dermoscopic findings are not always typical. We describe here a case of dermatofibroma exhibiting ridges, furrows and pseudocomedos, a pattern which is typical of seborrheic keratosis, in dermoscopy.

Linear lichen planus in children - case report / Liquen plano linear na infancia - relato de caso

Lichen planus is an uncommon disease in children, and only 2 to 3% of affected patients are under twenty years of age. This dermatosis may appear in several clinical forms, which vary according to the morphology and distribution of lesions. In less than 0.2% of all lichen planus cases, the lesions are distributed along the lines of Blaschko, and is a variant called linear lichen planus. This is a case report of a patient aged two years and eight months, who presented keratotic violaceous papules, affecting the abdomen, buttocks and right thigh, distributed along the lines of Blaschko. Histopathological examination confirmed a diagnosis of linear lichen planus.

O líquen plano é uma enfermidade pouco frequente na infância, apenas 2 a 3% dos pacientes acometidos se encontram abaixo dos vinte anos de idade. Essa dermatose pode se apresentar sob várias formas clínicas, as quais variam de acordo com a morfologia e distribuição das lesões. Em menos de 0,2% dos casos de líquen plano, as lesões se distribuem ao longo das linhas de Blaschko, variante denominada de líquen plano linear. Relata-se o caso de uma paciente de dois anos e oito meses de idade apresentando pápulas violáceas de superfície ceratósica acomentendo a região abdominal, região glútea e coxa direita, distribuídas ao longo das linhas de Blaschko, cujo exame histopatológico confirmou o diagnóstico de líquen plano linear.

Uso da limeciclina associada com o peróxido de benzoíla no tratamento da hipomelanose macular progressiva: um estudo prospectivo / The use of lymecycline and benzoyl peroxide for the treatment of progressive macular hypomelanosis: a prospective study

A hipomelanose macular progressiva é uma dermatose de etiopatogenia pouco conhecida. A participação do Propionibacterium acnes e a resposta ao tratamento com medicamentos com atividade para essa bactéria têm sido sugeridas. Relata-se uma série de casos de 13 pacientes com hipomelanose macular progressiva tratados com limeciclina e peróxido de benzoíla durante três meses, que apresentaram excelente resposta ao tratamento e nele se mantêm durante o período de seguimento do estudo.

Progressive macular hypomelanosis is a dermatosis of uncertain etiology. The participation of Propionibacterium acnes has been suggested in view of the response achieved following therapy with drugs that are active against this bacterium. This report describes a series of thirteen patients with progressive macular hypomelanosis who were treated with an association of lymecycline and benzoyl peroxide over a three-month period. Response to treatment was excellent and the positive results were maintained during the entire follow up period.

Síndrome de reiter: relato de caso

Relato de um caso de síndrome de Reiter em paciente jovem, do sexo masculino, com lesões dermatológicas típicas e achado positivo para o antígeno do complexo de histocompatibilidade HLA-B27. O quadro surgiu após infecção intestinal por Salmonella enteritidis, evoluindo com melhora após utilização de tetraciclina, prednisona e indometacina. Episódio recidivante foi tratado com metotrexato. É feita uma revisão da literatura, abordando os aspectos clínicos, laboratoriais, etiológicos e fisiopatogênicos dessa síndrome

Elastosis perforans serpiginosa associada à síndrome de Down: relato de caso / Serpiginous elastosis perforans associated with Down's syndrome: case report

Elastosis perforans serpiginosa (EPS) é afecçäo rara do tecido elástico, caracterizada por pápulas hiperceratósicas, de etiologia desconhecida, havendo associaçäo com certas doenças geneticamente determinadas, especialmente síndrome de Down, e iatrogenia em alguns casos. Relata-se o caso de um paciente de 10 anos de idade, do sexo masculino, que apresenta elastosis peerforans serpiginosa associada à síndrome de Down