Mustafa Al Balushi1, Ajoy Mathew Varghese2, Faisal Al Azri3, Rashid Al Abri2. 1. Ear, Nose, and Throat Program, Oman Medical Specialty Board, Muscat, Oman. 2. Ear, Nose, and Throat Unit, Department of Surgery, Sultan Qaboos University Hospital, Muscat, Oman. 3. Radiology Department, Sultan Qaboos University Hospital, Muscat, Oman.