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A Unified Methodological Framework for Vestibular Schwannoma Research
Published on: June 20, 2017
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Repeat Gamma Knife surgery for vestibular schwannomas
Sarah Lonneville1, Carine Delbrouck2, Cécile Renier3
1Gamma Knife Center, Hôpital Erasme, 1070 Brussels, Belgium ; Department of Neurosurgery, Hôpital Erasme, 1070 Brussels, Belgium.
Surgical Neurology International
|October 27, 2015
Summary
Repeat Gamma Knife (GK) surgery effectively controls vestibular schwannoma (VS) growth in most patients, offering a safe option for those whose tumors progress after initial treatment.
Area of Science:
- Neurosurgery
- Radiation Oncology
Background:
- Gamma Knife (GK) surgery is a standard treatment for vestibular schwannoma (VS), achieving high tumor control rates.
- Repeat GK surgery is considered for VS cases where initial radiosurgery fails to halt tumor progression.
Purpose of the Study:
- To evaluate the long-term efficacy and safety of repeat Gamma Knife surgery for vestibular schwannoma.
- To assess tumor control rates and adverse events following repeated GK treatments.
Main Methods:
- A retrospective analysis of 27 GK retreatments in 25 patients with VS was conducted.
- Median follow-up was 46 months; tumor control and complications were recorded.
- Dose planning utilized stereotactic positron emission tomography (PET) guidance in select cases.
Main Results:
- 85% of vestibular schwannomas showed controlled growth after repeat GK treatment.
- Tumor volume decreased or remained stable in the majority of cases.
- No new facial or trigeminal nerve palsy occurred; however, hearing preservation was not observed.
Conclusions:
- Repeat Gamma Knife surgery demonstrates long-term efficacy in managing vestibular schwannoma growth.
- This retreatment strategy is associated with low morbidity in carefully selected patients.
