Analysis of therapeutic methods for treating vocal process granulomas

Abstract

Conclusion: The combination of laryngeal microsurgery and local injections of botulinum toxin type A (BTA) can increase the cure rate of patients with vocal process granulomas (VPGs). Objective: To analyze the therapeutic effects of conservative treatments, microsurgical resection with suturing and microsurgery in combination with local injections of BTA for the treatment of VPGs. Methods: A retrospective analysis of 168 cases of VPG was performed. All of the patients initially received a conservative treatment. Some of the patients who did not respond to the conservative treatments were treated using microsurgical resection and microsuturing using an 8-0 absorbable filament. Other patients additionally received a four-point injection of BTA into the thyroarytenoid muscle and the arytenoid muscle on the operated side. Results: The lesions of 41.3% (71/168) of the patients who were given the conservative treatments (including acid suppression, vocal rest, and voice therapy) disappeared, and the lesions of 10.7% (18/168) of the patients were reduced. The conservative treatments were unsuccessful for 47% (79/168) of the patients. The cure rate was 78.4% (29/37) for the patients who were treated by microscope resection using a CO₂ laser and microsuturing of the surrounding mucosa. Of the eight patients who experienced a recurrence, five of them had lesions that disappeared after 3 months of conservative treatment, whereas the other three patients recovered after a second operation. The cure rate of the 42 patients who were treated using microsurgery combined with local injections of BTA was 95.2% (40/42), with only 2 cases of recurrence at 2 months post-treatment.

Keywords:

• Microsurgery
• botulinum toxin type A
• conservative treatment
• microsuturing

Acknowledgment

This study was supported by a grant from the National Natural Science Foundation of China (no. 81170900).

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.