*Division of Anatomic Pathology and Histology

†Division of Endocrinology

‡Division of Endocrine-Surgery-Fondazione Policlinico Universitario“Agostino Gemelli”-IRCCS, Rome Italy Fondazione Policlinico Universitario “Agostino Gemelli”-IRCCS, Rome, Italy

The authors have no funding or conflicts of interest to disclose.

All figures can be viewed online in color at www.anatomicpathology.com.

Reprints: Esther Diana Rossi, MD, PhD, MIAC - Division of Anatomic Pathology and Histology – Fondazione Policlinico “Agostino Gemelli” - IRCCS, Università Cattolica del Sacro Cuore, – Largo Francesco Vito, 1 – 00168 Rome, Italy (e-mail: [email protected]).