Francesco Porpiglia1, Daniele Amparore2, Enrico Checcucci2, Cristian Fiori2. 1. Division of Urology, Department of Oncology, School of Medicine, University of Turin San Luigi Hospital, Orbassano, Turin, Italy. Electronic address: porpiglia@libero.it. 2. Division of Urology, Department of Oncology, School of Medicine, University of Turin San Luigi Hospital, Orbassano, Turin, Italy.