Related Experiment Videos
Retrosigmoid approach for small and medium-sized acoustic neuromas
Jacques Magnan1, Marco Barbieri, Renato Mora
1ORL Unit, Hopital Nord, Marseille cedex, France.
Objective:
Clinical study of the keyhole acoustic neuroma retrosigmoid approach for facial nerve and hearing preservation.
Study Design:
This was a prospective case review from October 1993 to December 1998 in a referral hospital care unit.
Patients:
A total of 119 consecutive patients with a tumor size of <25 mm in the cerebellopontine angle corrected by a retrosigmoid approach were included in the study.
Interventions:
Standard audiometric and imaging assessments, complete tumor removal by using endoscopy-assisted control, and nerve monitoring.
Main Outcome Measures:
House-Brackmann facial nerve grade and hearing level by the American Academy of Otolaryngology-Head and Neck Surgery classification.
Results:
Grades I and II facial nerve function was obtained in 96% of cases, measurable hearing was preserved in 49% of cases, and 30% of cases achieved serviceable hearing.
Conclusion:
The retrosigmoid approach is a safe and reliable approach in random patients with small and medium-sized acoustic neuromas.