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Related Experiment Videos

Acoustic neuroma surgery outcomes.

D M Kaylie1, E Gilbert, M A Horgan

  • 1Department of Otolaryngology, Head and Neck Surgery, Oregon Health Sciences University, Portland, Oregon 97201, USA.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|September 25, 2001
PubMed
Summary

Modern acoustic neuroma surgery offers excellent facial nerve preservation (99%) and good hearing outcomes. This study highlights the safety and effectiveness of current surgical techniques for treating acoustic neuromas.

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Area of Science:

  • Neurosurgery
  • Otolaryngology
  • Neuro-oncology

Background:

  • Acoustic neuroma (vestibular schwannoma) surgery outcomes have significantly improved with advancements in surgical techniques, intraoperative monitoring, and imaging.
  • Modern goals include preserving facial nerve function and, when possible, hearing function.
  • Previous studies often lack standardized grading, limiting comparisons of outcomes with contemporary methods.

Purpose of the Study:

  • To evaluate the outcomes of acoustic neuroma surgery using modern techniques and standardized grading systems.
  • To assess facial nerve function preservation and hearing preservation rates.
  • To report complication rates associated with contemporary surgical management.

Main Methods:

  • Retrospective review of 97 patients who underwent acoustic neuroma surgery between 1992 and 1998 at a tertiary referral center.

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  • Preoperative audiograms and MRI with contrast were performed. Facial nerve function was graded using the House-Brackmann scale.
  • Intraoperative facial nerve monitoring was utilized. Hearing preservation was attempted in patients with preoperative hearing grades A or B.

    • Main Results:

    • Facial nerve integrity was preserved in 99% of patients (96/97). Excellent facial nerve function (HB 1-2) was achieved in 100% of intracanalicular tumors, 95% of small tumors, and 63% of medium tumors.
    • Serviceable hearing was preserved in 29% of patients with tumors smaller than 2 cm.
    • The overall complication rate was 20%, with cerebrospinal fluid leak being the most frequent complication.

    Conclusions:

    • Modern acoustic neuroma surgery, utilizing advanced imaging and techniques, is safe and yields excellent outcomes.
    • Surgery remains the primary treatment for most acoustic neuromas, pending long-term data from alternative therapies like Gamma Knife.
    • Standardized grading systems are crucial for comparing results across different treatment modalities.