[Vocal function of benign vocal fold lesions and outcomes assessment after CO2 phonomicrosurgery]

To investigate the nature of benign vocal fold lesions and its outcomes assessment after CO2 phonomicrosurgery.

Vocal function of 292 cases of benign vocal fold lesions (vocal nodules, Reinke's edema, vocal fold cyst, vocal fold polyp and chronic laryngitis) and their outcomes assessment after CO2 phonomicrosurgery were evaluated. Vocal function was examined by acoustic analysis, aerodynamic analysis and videostroboscopic examination.

Young women with professional occupation were predominant in vocal nodules and the higher age showered in Reinke's edema. Vocal function of vocal nodules and vocal fold polyps had improved distinctly only one month after operation. For Reinke's edema, vocal function can recover three months after operation steadily. Although vocal function of vocal cyst also had improved distinctly only one month after operation, there was depression instead of cyst, the outcome of vocal quality would be affected by that. Vocal function of chronic laryngitis did not change so much after operation. However, ventricular dysphonia did not changed any more.

Benign vocal fold lesion was located in the cover layer of the vocal fold. According to different lesions, the degree of voice disorder were differently. CO2 phonomicrosurgery can control the range of the operation and protect the cover layers delicately. Vocal function can recover three months after operation steadily. The localized lesions recovered only one month after operation. As the supraglottal hyperfunction remained post-operation, it is regarded as incorrect vocalization and effect on the prognosis.