title: Basal cell carcinoma arising on a verrucous epidermal nevus: a case report.
abstract: We report a case of basal cell carcinoma that appeared from an epidermal verrucous nevus in a 61-year-old patient. The onset of basal cell carcinoma in sebaceous nevi, basal cell nevi and dysplastic nevi is relatively common, but it is rarely associated with epidermal verrucous nevi. There is no consensus on whether the two lesions have a common cellular origin or whether they merely represent a collision of two distinct tumors. Since this association - as with other malignant tumors - is rare, there is no need for prophylactic removal of epidermal verrucous nevi.
authors.affiliation: Sector of Dermatology and Post-Graduation Course, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Analia
authors.initials: A
authors.lastname: Viana
authors.affiliation: Sector of Dermatology and Post-Graduation Course, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Felipe
authors.initials: F
authors.lastname: Aguinaga
authors.affiliation: Sector of Dermatology and Post-Graduation Course, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Flauberto
authors.initials: F
authors.lastname: Marinho
authors.affiliation: Sector of Dermatology and Post-Graduation Course, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Rosangela
authors.initials: R
authors.lastname: Rodrigues
authors.affiliation: Sector of Pathology, University Hospital and School of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Tullia
authors.initials: T
authors.lastname: Cuzzi
authors.affiliation: Sector of Dermatology and Post-Graduation Course, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Marcia
authors.initials: M
authors.lastname: Ramos-E-Silva
keywords: Basal cell carcinoma; Epidermal verrucous nevus
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