title: Photoletter to the editor: Collision tumor of melanoma and atypical fibroxanthoma of the scalp.
abstract: Several combinations of different skin tumors occuring one adjacent to the other or even in a single lesion have been described up to date. Collision tumors involving atypical fibroxanthoma and melanoma are extremely uncommon. Herein we present a case of melanoma associated with AFX and discuss on the usefulness of dermoscopy in the clinical diagnosis of collision tumors.
authors.affiliation: Department of Dermatology, University of Rome Tor Vergata, Italy;
authors.forename: Francesca
authors.initials: F
authors.lastname: Specchio
authors.affiliation: Skin Cancer Unit, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy;
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Argenziano
authors.affiliation: Department of Dermatology, Medical Universiy of Graz, Graz, Austria;
authors.forename: Iris
authors.initials: I
authors.lastname: Zalaudek
authors.affiliation: Department of Dermatology, University of Modena and Reggio Emilia, Modena, Italy;
authors.forename: Davide
authors.initials: D
authors.lastname: Guardoli
authors.affiliation: Skin Cancer Unit, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy;
authors.forename: Caterina
authors.initials: C
authors.lastname: Longo
authors.affiliation: Skin Cancer Unit, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy;
authors.forename: Elvira
authors.initials: E
authors.lastname: Moscarella
authors.affiliation: Pathology Unit, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy.
authors.forename: Simonetta
authors.initials: S
authors.lastname: Piana
authors.affiliation: Skin Cancer Unit, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy;
authors.forename: Aimilios
authors.initials: A
authors.lastname: Lallas
keywords: collision tumor; dermoscopy; fibroxanthoma; melanoma; skin cancer; trichoscopy