[Analysis of CO₂ laser and conventional laryngomicrosurgery treatments for vocal cord cyst: an evaluation of short-term voice acoustics outcomes].

Objective: To compare the short-term outcomes of CO₂ laser and conventional laryngeal microsurgery for vocal cord cyst. Method: Patients with vocal cord cyst were divided randomly into two groups. One group was treated with CO₂ laser (laser group) and the other underwent Micro-flap surgery(Micro-flap group). For the objective assessment, Amulti-dimensional voice program module for voice spectrum analysis was used. Result: In the laser group, there were no significant differences between the preoperative and 1 week postoperative parameters of Jitter, Shimmer and HNR(P>0.05). However，the parameters of G and VHI-10 were significantly different between the laser group and Micro-flap group(P<0.05). The objective data of the laser group pre-and post-surgery showed that the voice recovery of the laser group was significantly better than that of the Micro-flap group after 1 to 3 months of follow-up(P<0.05). But no significant differences of the parameters of G and VHI-10 was noted between the laser group and Micro-flap group(P>0.05). Conclusion: CO₂ laser laryngeal microsurgery for vocal cord cyst can significantly improve pronunciation quality.