title: Solitary Annular Plaque on the Scrotum.
authors.affiliation: Departments of *Dermatology, and †Pathology, Hospital Universitari Son Espases, Palma Mallorca, Spain.
authors.forename: Nicole
authors.initials: N
authors.lastname: Knöpfel
authors.forename: Luis Javier
authors.initials: LJ
authors.lastname: Del Pozo
authors.forename: Isaac
authors.initials: I
authors.lastname: Díaz
mesh_terms: D005834:Genital Neoplasms, Male; D006801:Humans; D008297:Male; D017499:Porokeratosis; D012611:Scrotum