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Background and Objectives:Voice is produced by the vibration of the vocal fold mucosa and laryngeal movements affect its vibration. It is speculative that asymetric laryngeal movements might be the cause of inadequate vibration of the vocal fold mucosa. Using the pharyngogram, authors studied the relation betwen the asymetric laryngeal movements and laryn-geal nodule in functional voice disorders. :Thirty patients with laryngeal nodule and thirty normal subjects were evaluated. All subjects were evaluated by an acoustic analysis and maximum phonation time. Laryngeal move-ments were investigated with a laryngostroboscopy. And we investigated the asymetric movement of larynx and perilarynx using /i/ phonation pharyngogram. Results:Acoustic analysis and maximum phonation time of the patients with laryngeal nodule were different with that of normal subjects. Asymetry of arytenoid movements and asymetry of thyroid cartilage metry of pyriform sinus was more comon in the patients with laryngeal nodule in the examination of the /i/ phonation pha-ryngogram. Conclusion:Laryngeal asymmetry might affect more commonly the vibration of the vocal fold mucosa in the patients with laryngeal nodule. (Korean J Otolaryngol 2002;45:76-81)