THE RESULTS OF SURGICAL TREATMENT OF ACOUSTIC NEUROMA BY DRILLING THE POSTERIOR WALL OF THE INTERNAL AUDITORY CANAL VIA THE RETROSIGMOID SUBOCCIPITAL APPROACH

Abstract

Objective: To assess of surgical results of acoustic neuroma by the retrosigmoid suboccipial approach with drilling the posterior wall of the internal auditory canal. Patients and methods: A prospective study with 26 patients who were diagnosed with acoustic neuroma and surgically treated by drilling the posterior wall of the internal auditory canal via retrosigmoid suboccipital approach at Viet-Duc Hospital from January 2019 to October 2020. Results: Mean age: 42.74±14.95; male: female ratio was 1; tinnitus was the most common symptom (76.92%), after that hearing loss (69.23%). There was no predominant in the side of the tumor. There was a significant difference between KOOS classification’s tumor before and after surgery, as well as the facial nerve function 3-month post-operation versus discharge time. Conclusion: The retrosigmoid suboccipital approach with drilling the posterior wall of the internal auditory canal was useful for treating acoustic neuroma both the tumor removing capacity and facial nerve preservation.