Ectopic hidradenoma papilliferum dermoscopically mimicking a blue nevus: a case report and review of the literature. (4th April 2013) - Panasiti, Vincenzo; Curzio, Michela; Roberti, Vincenzo; Lieto, Piergiorgio; Gobbi, Silvia; Devirgiliis, Valeria; Perrella, Eleonora; Calvieri, Stefano