Abstract Plasmoacanthoma is an extremely rare verrucous tumor located on periorificial regions characterized by dense dermal plasmacytic infiltrates. Some authors classify it as a form of reactive plasma cell proliferation which represents a heterogeneous spectrum of mucocutaneous disorders. These plasma...
Abstract Verrucous epidermal nevi are hamartomatous lesions of the epidermis that, unlike other epidermal nevi (such as sebaceous nevus or nevus comedonicus), are rarely associated with malignant neoplasms. The majority of squamous cell carcinoma develop in linear or multiple epidermal nevus and rarely i...
Carcinoma de Células Escamosas/etiología,
Nevo Sebáceo de Jadassohn/complicaciones,
Neoplasias Cutáneas/etiología,
Biopsia,
Carcinoma de Células Escamosas/patología,
Epidermis/patología,
Neoplasias Primarias Múltiples/complicaciones,
Neoplasias Primarias Múltiples/patología,
Nevo Sebáceo de Jadassohn/patología,
Neoplasias Cutáneas/patología,
Úlcera Cutánea/patología
Abstract We describe a fifty-six-year old, Afro-descendent female patient showing dystrophy of her twenty nails and hyperchromic, asymptomatic macule on her face. Histopathological examination of the macule showed vacuolization of the basal layer, melanophages in the superficial dermis and lymphoplasmocy...
Abstract Steatocystoma multiplex is a rare genetic disorder characterized by the presence of hamartomatous malformations at the junction of the pilosebaceous duct. It consists of encapsulated cystic lesions in the dermis, with adjacent sebaceous gland. When associated with inflammation, resembling hidrad...
Abstract Lupus tumidus is considered a rare subtype of chronic cutaneous lupus erythematosus, characterized by erythema and bright urticarial erythematous-violaceous lesions that leave no scars after regression. Histopathology reveals perivascular and periannexal lymphohistiocytic infiltrates in the papi...
Abstract Scleromyxedema is a rare chronic cutaneous mucinosis of unknown etiology. It is characterized by papular eruption and scleroderma with microscopic evidence of mucin deposition, fibroblast proliferation, and fibrosis. Most patients with scleromyxedema have monoclonal gammopathy and systemic manif...
Abstract Despite advances in diagnosis and treatment, infective endocarditis still shows considerable morbidity and mortality rates. The dermatological examination in patients with suspected infective endocarditis may prove very useful, as it might reveal suggestive abnormalities of this disease, such as...
Abstract Porokeratosis is a skin disorder clinically characterized by annular plaques with keratotic borders resembling the Great Wall of China and histopathologically by cornoid lamellae. The disease has several clinical variants. Porokeratosis ptychotropica, which has recently become part of these vari...
Abstract Eosinophilic fasciitis is a rare sclerodermiform syndrome of unknown etiology. It is characterized by the thickening of the muscular fascia and subcutaneous tissue, with a variable infiltration of eosinophils. Peripheral eosinophilia, poly or monoclonal hypergammaglobulinemia and increased eryth...
Eosinofilia/patología,
Fascitis/patología,
Piel/patología,
Biopsia,
Eosinofilia/tratamiento farmacológico,
Extremidades/patología,
Fascitis/tratamiento farmacológico,
Glucocorticoides/uso terapéutico,
Imagen por Resonancia Magnética,
Metilprednisolona/uso terapéutico,
Quimioterapia por Pulso,
Síndrome
