Methods 26 patients with laryngotracheal stenosis were included in this group. and of the 3 cases has diffusing thickening roughly in glottis ventricular fold and vestibule mucosa of larynx, in which, 2 cases showed the pharynx and trachea invaded near larynx; 3例可见喉部黏膜的弥漫性的不规则的软组织增厚,病变累及声门、喉室或喉前庭等结构,其中2例向上累及咽部结构和向下浸润气管黏膜;