Abstract
Generally, the vocal cords vibrate and constitute the sourse of phonation. However, in case with wide glottal gap at phonation due to a scar formation after an injury, surgery or radiotherapy to the larynx, the false folds vibrate instead of vocal cord vibration. In cases whose vocal as well as false folds do not vibrate, The arytenoid mucosa is known to vibrate as a source of phonation (so called arytenoid phonation), In this report, we described a 59-years-old man who was treated with CO2 laser debulking followed by radiotherapy against glottic Tla cancer. Because of a scar formation after the therapy, there appeared a defect in the right vocal cord and false fold and his suffered from severe hoarseness. Both vocal cord and false fold did not vibrate and, as a result, only the arytenoid mucosa vibrates. Intrafold fat injection was done under the endolaryngeal microsurgery, and the vocal cord and false fold of the healthy side vibrates with the arytenoid mucosa of the injected site. After the surgery, the patient felt comfortable on phonation and the quality of voice improved.
