RESUMO
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 papillary and reticular dermis and interstitial mucin deposition. Treatment is based on photoprotection, topical corticosteroids and antimalarials. We report two cases of lupus tumidus, which deserve attention for their low frequency in the literature, in addition to their relevance as a differential diagnosis among dermatologic disorders.
Assuntos
Lúpus Eritematoso Cutâneo/patologia , Pele/patologia , Antimaláricos/uso terapêutico , Biópsia , Cloroquina/uso terapêutico , Feminino , Glucocorticoides/uso terapêutico , Humanos , Lúpus Eritematoso Cutâneo/tratamento farmacológico , Pessoa de Meia-Idade , Mucinas , Prednisona/uso terapêutico , Resultado do TratamentoRESUMO
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 cell proliferations have been considered to be a benign immunologic inflammatory reaction to known or unknown stimuli. However, the etiology of plasmoacanthoma remains highly speculative. We report the case of a 40-year-old woman who presented with a lobulated warty lesion affecting the lower lip. Biopsy from the lesion was compatible with plasmoacanthoma, which remains an underreported disease in the dermatology literature.
Assuntos
Acantoma/patologia , Neoplasias Labiais/patologia , Mucosa Bucal/patologia , Neoplasias Cutâneas/patologia , Adulto , Biópsia , Proliferação de Células , Derme/patologia , Feminino , Humanos , Imuno-Histoquímica , Lábio/patologia , Plasmócitos/patologiaRESUMO
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 variants, is quite rare and little known. The entity is characterized by verrucous plaques - which may resemble a psoriasis plaque - that affect the regions of the buttocks, most commonly the gluteal cleft, with or without extremity involvement. Itching is often present. We report a rare case of porokeratosis ptychotropica and highlight its unusual manifestation (single plaque), the first case reported in the Brazilian literature.