1. Department of Molecular and Clinical Endocrinology and Oncology (A.F., V.R., F.F., P.E.M., F.M., V.M., M.D.P., G.L., A.C.), Federico II University of Naples, 80131 Naples, Italy
2. Endocrinology (A.F.), National Cancer Institute, Fondazione G. Pascale, 80131 Naples, Italy
3. Unit of General Surgery, Ultrasound Guided and Neck Pathology Surgery (A.P.A., S.S.), Incurabili Hospital Azienda Sanitaria Locale Napoli 1 Centro, 80131 Naples, Italy
4. Department of General and Endocrine Surgery (C.M.), Federico II University of Naples, 80131 Naples, Italy
5. Department of Endocrinology (E.P.), Regina Apostolorum Hospital, Albano Laziale, 00041 Rome, Italy