Hemosiderotic dermatofibroma

Abstract: We report a rare clinical case of hemosiderotic dermatofibroma in a 36-year-old female patient. The main dermatoscopic finding was represented by homogeneous blue-gray pigmentation. The aim of this report is to demonstrate the rarity of the lesion and the dermatoscopic importance it assumes by sharing a blue-gray homogeneous pattern with other benign and malignant lesions.

Amantadine-induced livedo reticularis - Case report

AbstractLivedo reticularis is a spastic-anatomical condition of the small vessels which translates morphologically by a reticular pattern, interspersing cyanosis, pallor and erythema. The same can be congenital or acquired. Among the acquired, we highlight the physiological livedo reticularis and the idiopathic livedo by vasospasm; the latter configures the most common cause. The drug-induced type is less common. The drugs amantadine and norepinephrine are often implicated. Cyanosis is usually reversible if the causative factor is removed, however, with chronicity, the vessels may become permanently dilated and telangiectatic. We report a case of a patient diagnosed with Parkinson's disease with chronic livedo reticularis associated with the use of amantadine and improvement after discontinuation of the drug.

Dermatoscopic fi ndings as a complementary tool in the differential diagnosis of the etiological agent of tinea capitis

Tinea capitis is a scalp infection caused by fungi. In Brazil, the main causative agents are Microsporum canis and the Trichophyton tonsurans. Etiological diagnosis is based on suggestive clinical findings and confirmation depends on the fungus growth in culture. However, it is not always possible to perform this test due to lack of availability. We reveal the dermoscopic findings that enable distinction between the main causative agents of Tinea capitis, M. canis and T. tonsurans. The association of clinical and dermatoscopic findings in suspected Tinea capitis cases may help with the differential diagnosis of the etiological agent, making feasible the precocious, specific treatment.

Granulomatose de Wegener / Wegener?s granulomatosis

A granulomatose de Wegener é uma doença relativamente incomum e caracterizada por inflamação granulomatosa necrosante e vasculite de pequenos e médios vasos. Múltiplos órgãos são frequentemente envolvidos, com predileção para o trato respiratório, os olhos e os rins. Homens e mulheres de todas as idades podem ser afetados. A apresentação clínica das lesões dermatológicas é altamente variável, incluindo púrpura palpável, nódulos subcutâneos dolorosos, pápulas, pústulas e hiperplasia gengival. A realização de biópsia e análise histopatológica é essencial para a confirmação diagnóstica e diagnóstico diferencial, assim como outros exames, tais como radiografia e tomografia computadorizada de tórax. A doença possui diferentes graus de gravidade e cada caso deve ser analisado de forma específica para uma melhor opção terapêutica, objetivando evitar complicações precoces ou tardias...

Polarized dermoscopy of mammary Paget disease / Dermatoscopia da doença de Paget mamária

Mammary Paget's disease is a rare intraepithelial adenocarcinoma, located on the nipple/areola complex, highly associated with breast cancer. Although the international literature emphasizes the dermatoscopic pattern of mammary Paget's disease pigmented variant, the authors describe the dermoscopic findings of classical Paget's disease and demonstrate the presence of chrysalis-like structures, criteria recently described in the literature and not yet reported in Paget's disease. .

Doença de Paget mamária é considerada um adenocarcinoma intra-epitelial raro, localizado no complexo mamilo-aréola,com alta associação ao câncer de mama. Apesar da literatura mundial realçar o padrão dermatoscópico da doença de Paget mamária variante pigmentada os autores descrevem os achados dermatoscópicos da doença de Paget clássica realçando a presença das estruturas crisálida-símiles,critério recentemente descrito na literatura mundial e ainda não relatado na Doença de Paget. .