Dr. Marrakchi Jihène: University Hospital Assistant in the Department of Otolaryngology and Cervicofacial Surgery, La Rabta Hospital Tunis. Dr. Jrad Myriam: Associate Professor in the department of imaging, La Rabta Hospital Tunis. Dr. Ben Chlig Haifa: specialist in imaging. Faculty of Medicine of Tunis, University Tunis El Manar (Tunisia).