title: Porokeratosis simulating Bowen's disease on dermoscopy.
abstract: Porokeratosis is a disorder of epidermal keratinization characterized by the presence of annular hyperkeratotic plaques. Its etiopathogenesis is not yet fully understood, but a relationship with immunosuppression has been reported. Dermoscopic examination revealed a classic yellowish-white ring-like structure that resembled "volcanic crater contour" - the so-called cornoid lamella. We describe a case of porokeratosis in a female patient with chronic lymphedema, which was similar to Bowen's disease due to the many glomerular vessels seen on clinical examination and dermoscopy.
authors.affiliation: Universidade de São Paulo (USP) - São Paulo (SP), Brazil.
authors.forename: Alzinira Sousa
authors.initials: AS
authors.lastname: Herênio
authors.affiliation: Universidade de Pernambuco (UPE) - Recife (PE), Brazil.
authors.forename: Silvana Maria de Morais
authors.initials: SM
authors.lastname: Cavalcanti
authors.affiliation: Universidade de Pernambuco (UPE) - Recife (PE), Brazil.
authors.forename: Emmanuel Rodrigues de
authors.initials: ER
authors.lastname: França
authors.affiliation: Universidade de São Paulo (USP) - São Paulo (SP), Brazil.
authors.forename: Clarissa Marques
authors.initials: CM
authors.lastname: Maranhão
authors.affiliation: Universidade de Pernambuco (UPE) - Recife (PE), Brazil.
authors.forename: Eliane Ruth Barbosa de
authors.initials: ER
authors.lastname: Alencar
mesh_terms: D000368:Aged; D001913:Bowen's Disease / Q000000981:diagnostic imaging* / Q000473:pathology*; D002908:Chronic Disease; D046169:Dermoscopy / Q000379:methods*; D003937:Diagnosis, Differential; D004890:Erythema / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D008209:Lymphedema / Q000000981:diagnostic imaging / Q000473:pathology; D017499:Porokeratosis / Q000000981:diagnostic imaging* / Q000473:pathology*