F Basile1, F Calise2. 1. Division of General and Oncologic Surgery, Surgical Department, "Vittorio Emanuele, Ferrarotto e S. Bambino" Hospital, Catania, Italy. 2. Department of General Surgery, Center for Hepatobiliary and Pancreatic Surgery, Pineta Grande Hospital, Castel Volturno, CE, Italy. fulvio.calise@libero.it.