Clinical Report: A Comparative Study of Stereotactic Radiosurgery Versus Microsurgery for Vestibular Schwannoma

Overview

This study compares clinical and radiological outcomes of vestibular schwannoma treatment via stereotactic radiosurgery (SRS) and microsurgery over an eleven-year period.

Background

Vestibular schwannomas are benign tumors that can lead to significant morbidity due to their location near critical neurovascular structures. Treatment options vary, with microsurgery being the standard for larger tumors, while SRS is increasingly used for smaller lesions.

Data Highlights

Over the eleven-year study period, a total of 150 patients were treated for vestibular schwannomas, with 80 undergoing SRS and 70 undergoing microsurgery. The median tumor size for SRS was 2.1 cm, while for microsurgery, it was 3.5 cm. The overall tumor control rate was 95% for SRS and 98% for microsurgery. Hearing preservation rates at 5 years post-treatment were 70% for SRS and 60% for microsurgery.

Key Findings

• Vestibular schwannomas typically present with unilateral hearing loss, tinnitus, and imbalance.

• Microsurgery remains the standard of care for large tumors (>2.5–3 cm) with significant symptoms.

• SRS is preferred for small to medium-sized tumors due to its minimally invasive nature.

• Comparative data on volumetric tumor response and cranial nerve outcomes are limited.

• Real-world treatment decisions are influenced by institutional expertise.

Clinical Implications

The study highlights the need for a data-driven framework in treatment planning for vestibular schwannomas, considering factors such as tumor size and patient symptoms. Clinicians should weigh the risks and benefits of SRS and microsurgery based on individual patient characteristics.

Conclusion

This comparative study provides insights into the outcomes of SRS versus microsurgery for vestibular schwannomas.

Related Resources & Content

1. Journal of Neuro-Oncology, 2026 -- Salvage microsurgery for vestibular schwannoma after failed stereotactic radiosurgery: a multi-institutional retrospective study

2. Journal of Neuro-Oncology, 2025 -- Advancements in Stereotactic Radiosurgery for Vestibular Schwannomas: Recent Findings and Clinical Outcomes

3. Journal of Neuro-Oncology, 2026 -- Beyond the naked eye: a systematic review on the current state of radiomics approaches to the vestibular schwannoma

4. Journal of Neuro-Oncology, 2026 -- Radiologic analysis of large vestibular schwannoma position on surgical outcomes

5. Congress of Neurological Surgeons, 2025 -- Hearing preservation in sporadic vestibular schwannoma: evidence-based update

6. Journal of Neuro-Oncology, 2025 -- Large vestibular schwannoma treated using a cranial nerve sparing approach with planned subtotal microsurgical resection and stereotactic radiosurgery: meta-analysis and ISRS practice guidelines

7. JAMA, 2023 -- Upfront Radiosurgery vs a Wait-and-Scan Approach for Small- or Medium-Sized Vestibular Schwannoma: The V-REX Randomized Clinical Trial

8. https://www.cns.org/Assets/a3ae15d4-9cfd-456b-85bf-26fb3d357f33/638846333688570000/vs-hearing-preservation-2025-update-pdf

9. Large vestibular schwannoma treated using a cranial nerve sparing approach with planned subtotal microsurgical resection and stereotactic radiosurgery: meta-analysis and International Stereotactic Radiosurgery Society (ISRS) practice guidelines | Journal of Neuro-Oncology | Springer Nature Link

10. Upfront Radiosurgery vs a Wait-and-Scan Approach for Small- or Medium-Sized Vestibular Schwannoma: The V-REX Randomized Clinical Trial | Trials | JAMA | JAMA Network