I Mohamad1, Maf Khalid2, Ah Abdul Karim3. 1. Department of Otorhinolaryngology- Head & Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia Health Campus. 2. Department of Otorhinolaryngology-Head & Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia Health Campus. 3. Department of Radiology, School of Medical Sciences, Universiti Sains Malaysia Health Campus.