Interarytenoid botulinum toxin A injection for the treatment of vocal process granuloma

OBJECTIVES: To report on the efficacy and adverse effects of interarytenoid botulinum toxin A injection for the treatment of vocal process granuloma. METHODS: A retrospective chart review was conducted of eight patients with vocal process granuloma resistant to anti-reflux therapy who underwent interarytenoid botulinum toxin A injection. The mean dosage of botulinum toxin A injected was 6.56 U. RESULTS: Fifty per cent of patients had complete regression of the lesion and 50 per cent had partial regression. The main side effects were breathiness (n = 4), voice breaks (n = 1) and aspiration (n = 1). CONCLUSION: Interarytenoid botulinum toxin A injection for the treatment of vocal process granuloma is an effective mode of therapy, with transient vocal and swallowing side effects.