1. Department of Surgery,University of Rome “La Sapienza”-Polo Pontino, Hospital “A. Fiorini”, Via Firenze, Terracina, Latina, Italy.
2. Department of Radiology,Hospital “P. Colombo”, Via Orti Ginnetti 7, Velletri, Rome, Italy; University of Rome “La Sapienza”-Polo Pontino, Hospital “A. Fiorini”, Via Firenze, Terracina, Latina, Italy.