A challenging diagnosis: Recurrent nevus or melanoma Journal title: Turkderm-Turkish Archives of Dermatology and Venereology Authors: Gonca Elçin, Sema Koç Yıldırım, Özay Gököz, Sibel Doğan Günaydın, Önder Bozdoğan, Harald Kittler Subject(s): Medicine, Dermatology