QUE, Syril Keena T.; FRAGA-BRAGHIROLI, Naiara; GRANT-KELS, Jane M.; RABINOVITZ, Harold S.; OLIVIERO, Margaret; SCOPE, Alon. A pink papule on the back of an 82-year-old man: an example of the buttonhole sign on reflectance confocal microscopy. Dermatology Practical & Conceptual, [S. l.], p. 1–2, 2016. DOI: 10.5826/dpc.0603a01. Disponível em: https://dpcj.org/index.php/dpc/article/view/dermatol-pract-concept-articleid-dp0603a01.. Acesso em: 3 jun. 2026.