1. Neuroradiology Unit, “San Giuseppe Moscati” Hospital, Avellino, Italy;
2. Department of Internal and Experimental Medicine “Magrassi-Lanzara”, Institute of Radiology, Second University of Naples, Naples, Italy;
3. Neurosurgery Unit, “San Giuseppe Moscati” Hospital, Avellino, Italy;
4. Neurosurgery Unit, “San Giuseppe Moscati” Hospital Avellino, Italy