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Anais Brasileiros de Dermatologia

versão impressa ISSN 0365-0596versão On-line ISSN 1806-4841

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TEBET, Ana Carolina Franco et al. Porokeratosis ptychotropica. An. Bras. Dermatol. [online]. 2016, vol.91, n.5, suppl.1, pp.134-136. ISSN 1806-4841.  http://dx.doi.org/10.1590/abd1806-4841.20164399.

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.

Palavras-chave : Dermatology; Dermopathology; Pathology; Porokeratosis.

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