Lichen Nitidus is a chronic idiopathic immunologically-driven dermatosis that is characterized on the clinical domain by shiny, flesh-colored micropapules and, pathologically, by a lymphohistiocytic dermal infiltrate with hydropic degeneration of the basal layer or, on occasions, inflammation with granulomatous features. The infiltrate fulfills and distorts the papillary dermis, compress the overlying atrophic ...
Introdução: O carcinoma de células de Merkel é um carcinoma neuro-endócrino raro, agressivo que se manifesta geralmente nos idosos. Apresenta-se geralmente como um nódulo de crescimento rápido localizado preferencialmente na cabeça, pescoço ou membros. Tem elevada taxa de recorrência loco-regional e à distância. A excisão cirúrgica radical é o tratamento consensual e o papel da linfadenectomia, da radioterapia ...
The case of a 6 year old Caucasian male bearing, for the last 12 months, asymptomatic nondescript, flesh colored papules on his anterior thorax and arms is reported. Upon pathological examination, the diagnosis of Eruptive Vellus Hair Cysts was confirmed. A brief revision of this entity, as well as its nosographic framing within the cyst-like developmental skin abnormalities is done. ; É apresentado caso de eu...
Introduction: Angiosarcoma is the most common vascular tumor in the context of chronic lymphedema, known as Stewart-Treves syndrome. However, it is known that Kaposi's sarcoma is often accompanied by lymphedema (often precedes the onset of typical lesions), and occasionally distinguishing between Kaposi's sarcoma and angiosarcoma may be a diagnostic challenge.Clinical case: We present the case of a male patient...
Eccrine poroma is a relatively rare benign adnexal tumor with multiple clinical presentations, mimicking several other cutaneous neoplasms. The pigmented form is uncommon and usually located in nonacral sites in non-white patients. The authors present the case of a patient with a pigmented tumoural lesion on the left shoulder clinically thought to represent nodular malignant melanoma, but whose histopathology r...
Introduction: Squamous cell carcinoma of the scrotum is a rare tumour. It was the first cancer directly linked to occupational exposure to carcinogens (polycyclic aromatic hydrocarbons).Clinical Case: A 59-year old man was referred with a one year history of a painful scrotal ulcer, 8 cm in diameter, associated with genital lymphedema. Histological examination confirmed the diagnosis of squamous cell carcinoma....
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Resumo: Do espectro da radiação solar que atinge a superfície terrestre, a radiação ultravioleta (UVA e UVB) é a principal responsável pelas reacções cutâneas benéficas e nefastas. Os efeitos biológicos dos raios UV sobre a pele dividem-se em fenómenos precoces, como acção térmica, anti-raquítica, pigmentação imediata e acção anti depressiva, fenómenos tardios, como o eritema actínico ou queimadura solar, pigme...
ermatosis, caused by prolonged and repeated exposure to heat. Multiple heat sources have been reported to cause this condition, as fire or stove in proximity with the skin. Case report: We report a case of a diabetic teenager with erythema ab igne induced by a laptop computer. Conclusions: Laptop induced erythema ab igne is an underdiagnosed clinical entity. In the future maybe it will be more frequent due to t...
Introdução: A Dermatite herpetiforme é uma dermatose crónica, pruriginosa e polimórfica considerada o equivalente cutâneo da doença celíaca. Na população pediátrica é, com frequência, um diagnóstico difícil de evocar, quer pela sua raridade quer pelo polimorfismo das lesões cutâneas.Caso Clínico: Apresentamos um doente do sexo masculino de 8 anos, com lesões polimorfas nas superfícies extensoras dos membros evo...
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