Abstract

• The localized vocal polyp and singer's nodules are the most common benign lesion of the larynx. This lesion is due mainly to trauma secondary to vocal abuse.
  These nodules were ressected out with laryngeal forcep under indirect laryngoscopy and maximum phonation time was measured before and after the operation.
  Timbre of the voice was also analyzed at same time.
  Very shortened phonation time of the patient with vocal nodule has returned to normal range (male:30 seconds, female: 20 seconds) postoperatively.
  Maximum phonation time has been widely utilized as a simple clinical test for evaluating the vocal function.
  It is the purpose of this study to acknowledge how much the expiratory movement during the phonation is converted into a single vowel sound efficiently. The author has made a brief literature review.