title: A pigmented flat lesion on the leg of a 72-year-old man.
authors.affiliation: Department of Dermatology, Hospital de Santo António dos Capuchos - Centro Hospitalar de Lisboa Central, Lisboa, Portugal.
authors.forename: Virgínia Coelho
authors.initials: VC
authors.lastname: de Sousa
authors.affiliation: Department of Dermatology, Hospital de Santo António dos Capuchos - Centro Hospitalar de Lisboa Central, Lisboa, Portugal.
authors.forename: André
authors.initials: A
authors.lastname: Oliveira
keywords: clonal seborrheic keratosis; dermoscopy; melanoma