title: A slowly enlarging purple nodule on the arm.
authors.affiliation: Department of General Medicine, Homerton University Hospital, East London, UK.
authors.forename: Sheena
authors.initials: S
authors.lastname: Ramyead
authors.affiliation: Department of Histopathology, King's College Hospital, London, UK.
authors.forename: Salvador
authors.initials: S
authors.lastname: Diaz-Cano
authors.affiliation: Department of Dermatology, Lewisham and Greenwich NHS Trust, London, UK.
authors.forename: Lucia
authors.initials: L
authors.lastname: Pozo-Garcia