1 Division of Radiology, "Istituto Nazionale Tumori IRCCS Fondazione Pascale - IRCCS di Napoli", Naples, Italy.
2 Operative Unit of General Surgery and Kidney Transplantation, Advanced Biomedical Science Department University Federico II of Naples, Naples, Italy.
3 Division of Hepatobiliary Surgical Oncology, "Istituto Nazionale Tumori IRCCS Fondazione Pascale - IRCCS di Napoli", Naples, Italy.