Fiberoptic laryngoscopy, which requires local anesthesia of the nasal cavity and oropharynx prior to the examination, is performed after anesthesia. The examination is performed through a nasal approach, passing through the nasal cavity and oropharynx to reach the larynx. The main focus is on the condition of the mucosa of the larynx, whether there is lymphoid follicular hyperplasia in the posterior pharyngeal wall and the root of the tongue, and whether there is redness or congestion or swelling of the epiglottis. Check whether there are foreign bodies in the epiglottis valley, abnormalities in the aryepiglottic and interaryepiglottic areas, fluid in the pyriform fossa, hypertrophy or neoplasia in the bilateral ventricular bands, congestion or edema in the bilateral vocal folds, and check whether there are neoplasia on the vocal folds. The closure of the vocal folds should be observed during vocalization, as well as checking for neoplastic organisms under the vocal folds.