1. Division of Radiology, Università degli Studi della Campania Luigi Vanvitelli, 80138 Naples, Italy
2. Department of Radiology, Ospedale del Mare-ASL NA1 Centro, 80147 Naples, Italy
3. Department of Gynecology, Ospedale del Mare-ASL NA1 Centro, 80147 Naples, Italy
4. Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy
5. Department of Radiology, James Cook University Hospital, Marton Road, Middlesbrough TS4 3BW, UK