Primary unifocal penile follicular center non-Hodgkin lymphoma: Report of a rare case and review of the literature - Nikolaos Kostakopoulos; Christos Masaoutis; Vasileios Argyropoulos; Varvara Pantelaion; Panagiotis Theodoropoulos; Panagiotis Kouroupakis; Athanasios Kostakopoulos (Asian Journal of Urology)