title: A pink papule on the back of an 82-year-old man: an example of the buttonhole sign on reflectance confocal microscopy.
authors.affiliation: Department of Dermatology, University of Connecticut Health Center, Farmington, CT, USA.
authors.forename: Syril Keena T
authors.initials: SK
authors.lastname: Que
authors.affiliation: Department of Dermatology, University of Miami Miller School of Medicine, Miami, FL, USA.
authors.forename: Naiara
authors.initials: N
authors.lastname: Fraga-Braghiroli
authors.affiliation: Department of Dermatology, University of Connecticut Health Center, Farmington, CT, USA.
authors.forename: Jane M
authors.initials: JM
authors.lastname: Grant-Kels
authors.affiliation: Department of Dermatology, University of Miami Miller School of Medicine, Miami, FL, USA.
authors.forename: Harold S
authors.initials: HS
authors.lastname: Rabinovitz
authors.affiliation: Department of Dermatology, University of Miami Miller School of Medicine, Miami, FL, USA.
authors.forename: Margaret
authors.initials: M
authors.lastname: Oliviero
authors.affiliation: Department of Dermatology, Sheba Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Alon
authors.initials: A
authors.lastname: Scope