Advanced laryngeal cases are defined here as T stages ≥3 and/or N + disease, i.e., cases for which limited larynx-only fields are not appropriate. The larynx is divided into three sites: supraglottis, glottis, and subglottis. The subglottic space extends from the first tracheal ring to 5 mm inferior to the free edge true vocal cords (TVCs). The glottic larynx contains the true vocal folds, anterior commissure, posterior commissure, and the infraglottic space (5 mm inferior to the free edge of the TVCs). The supraglottic larynx contains the following subsites of the larynx: ventricles, false vocal folds (FVCs), aryepiglottic folds, and epiglottis (infrahyoid, suprahyoid, laryngeal surface, lingual surface).