الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 133 |  |  |
| | | from | 133 | | |
Abstract
The larynx is the organ of phonation and vocal fold lesions lead to voice disorders. Vocal fold nodules, polyps, cysts, Rienks edema and contact granuloma are common benign lesions. These lesions effect on the mucosal layer and the superficial layer of lamina propria.
Restoration of normal voice is the main aim of phonosurgery by removing a lesion from superficial layers of the vocal fold. Preservation of deep layers of lamina propria is important to avoid scar of vocal fold and dysphonia.
In the last several years, there was a revolution in using the laser in treatment laryngeal lesions. There were advantages of CO2 laser over the cold steel technique in management benign vocal fold lesions by development laser into microspot and super pulsed mode to avoid heating effect on deep layers of lamina propria.
Our study conducted on 40 patients (32 males and 8 females) aged between 20 to 62 years with benign vocal fold lesions who were divided into 2 groups. group (A) was treated by conventional method and group (B) was treated by the CO2 laser.
We found that the improvement of quality of voice after surgery in both methods had no significant difference by using laryngeal video-stroboscopy, GRBAS scale and the voice handicap index. The significant difference was in intraoperative time and intraoperative bleeding because laser had less time and bleeding. Both techniques had not any documented cases of postoperative complications or recurrence after 3 months follow up. The using of the CO2 laser had high cost comparing to the cold steel technique.