Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysis

Introduction: Stereotactic radiosurgery (SRS) is a widely used treatment modality for vestibular schwannomas due to its non-invasive nature and high tumor control rates. However, some patients experience tumor progression after treatment. In this setting, reirradiation with SRS represents a potentia...

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Main Authors: Noel-Adrian Hollosi, Julie Luise Reimers, Antonio Santacroce, Christoph Fürweger, Markus Kufeld, Anna M.E. Bruynzeel, Joost J.C. Verhoeff, Alexander Muacevic, Helen A. Shih, Felix Ehret
Format: Article
Language:English
Published: Elsevier 2025-09-01
Series:Clinical and Translational Radiation Oncology
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Online Access:http://www.sciencedirect.com/science/article/pii/S2405630825000813
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author Noel-Adrian Hollosi
Julie Luise Reimers
Antonio Santacroce
Christoph Fürweger
Markus Kufeld
Anna M.E. Bruynzeel
Joost J.C. Verhoeff
Alexander Muacevic
Helen A. Shih
Felix Ehret
author_facet Noel-Adrian Hollosi
Julie Luise Reimers
Antonio Santacroce
Christoph Fürweger
Markus Kufeld
Anna M.E. Bruynzeel
Joost J.C. Verhoeff
Alexander Muacevic
Helen A. Shih
Felix Ehret
author_sort Noel-Adrian Hollosi
collection DOAJ
description Introduction: Stereotactic radiosurgery (SRS) is a widely used treatment modality for vestibular schwannomas due to its non-invasive nature and high tumor control rates. However, some patients experience tumor progression after treatment. In this setting, reirradiation with SRS represents a potential treatment option. This systematic review and meta-analysis evaluates the evidence for reirradiation of vestibular schwannomas with SRS. Methods: This systematic literature review and meta-analysis investigates the efficacy and safety of reirradiation with SRS for vestibular schwannoma and was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Results: A total of 806 studies were screened and 35 included, comprising 394 reirradiated patients. The median time from first treatment to reirradiation was 45 months (range: 12 – 65 months). Reirradiation with SRS, applying a median marginal/prescription dose of 12 Gy, achieved an estimated local control of 95% (95% confidence interval (CI): 92 – 97%, I2 = 29.62%, p = 0.10). Trigeminal and facial nerve deterioration rates after repeat SRS were 7% (95% CI: 4 – 10%, I2 = 0.0%, p = 0.44) and 6% (95% CI: 3 – 8%, I2 = 0.0%, p = 0.53), respectively. Serviceable hearing after reirradiation with SRS was rare (5%, 95% CI: 2 – 8%, I2 = 0.0%, p = 0.46). Among patients with serviceable hearing before reirradiation, 43% maintained it after treatment (95% CI: 29 – 57%, I2 = 65.71%, p = 0.00). The risk of bias across all studies was high. Conclusion: Reirradiation with SRS appears to be a safe and effective salvage treatment for progressive vestibular schwannomas. Prospective studies are warranted to define the optimal dose, timing, and dose constraints for reirradiation.
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spelling doaj-art-e37c22de95f24a1d97b5b9fdd8bf3f332025-08-20T03:36:19ZengElsevierClinical and Translational Radiation Oncology2405-63082025-09-015410098910.1016/j.ctro.2025.100989Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysisNoel-Adrian Hollosi0Julie Luise Reimers1Antonio Santacroce2Christoph Fürweger3Markus Kufeld4Anna M.E. Bruynzeel5Joost J.C. Verhoeff6Alexander Muacevic7Helen A. Shih8Felix Ehret9Edwin L. Steele Laboratories for Tumor Biology, Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, USA; University of Münster, Münster, GermanyUniversity of Lübeck, Lübeck, GermanyEuropean Radiosurgery Center Munich, Munich, Germany; Department of Neurosurgery, St. Barbara-Klinik Hamm-Heessen, Hamm, Germany; Department of Medicine, Faculty of Health, Witten/Herdecke University, Witten, GermanyEuropean Radiosurgery Center Munich, Munich, GermanyEuropean Radiosurgery Center Munich, Munich, GermanyDepartment of Radiation Oncology, Amsterdam UMC, Cancer Center Amsterdam, Amsterdam, the NetherlandsDepartment of Radiation Oncology, Amsterdam UMC, Cancer Center Amsterdam, Amsterdam, the NetherlandsEuropean Radiosurgery Center Munich, Munich, GermanyDepartment of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, USAEuropean Radiosurgery Center Munich, Munich, Germany; Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, USA; Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Berlin, Germany; German Cancer Consortium (DKTK), Partner Site Berlin, a Partnership Between DKFZ and Charité – Universitätsmedizin Berlin, Germany; Corresponding author at: Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Augustenburger Platz 1, 13353 Berlin, Germany.Introduction: Stereotactic radiosurgery (SRS) is a widely used treatment modality for vestibular schwannomas due to its non-invasive nature and high tumor control rates. However, some patients experience tumor progression after treatment. In this setting, reirradiation with SRS represents a potential treatment option. This systematic review and meta-analysis evaluates the evidence for reirradiation of vestibular schwannomas with SRS. Methods: This systematic literature review and meta-analysis investigates the efficacy and safety of reirradiation with SRS for vestibular schwannoma and was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Results: A total of 806 studies were screened and 35 included, comprising 394 reirradiated patients. The median time from first treatment to reirradiation was 45 months (range: 12 – 65 months). Reirradiation with SRS, applying a median marginal/prescription dose of 12 Gy, achieved an estimated local control of 95% (95% confidence interval (CI): 92 – 97%, I2 = 29.62%, p = 0.10). Trigeminal and facial nerve deterioration rates after repeat SRS were 7% (95% CI: 4 – 10%, I2 = 0.0%, p = 0.44) and 6% (95% CI: 3 – 8%, I2 = 0.0%, p = 0.53), respectively. Serviceable hearing after reirradiation with SRS was rare (5%, 95% CI: 2 – 8%, I2 = 0.0%, p = 0.46). Among patients with serviceable hearing before reirradiation, 43% maintained it after treatment (95% CI: 29 – 57%, I2 = 65.71%, p = 0.00). The risk of bias across all studies was high. Conclusion: Reirradiation with SRS appears to be a safe and effective salvage treatment for progressive vestibular schwannomas. Prospective studies are warranted to define the optimal dose, timing, and dose constraints for reirradiation.http://www.sciencedirect.com/science/article/pii/S2405630825000813Vestibular schwannomaAcoustic neuromaStereotactic radiosurgeryRadiosurgeryReirradiation
spellingShingle Noel-Adrian Hollosi
Julie Luise Reimers
Antonio Santacroce
Christoph Fürweger
Markus Kufeld
Anna M.E. Bruynzeel
Joost J.C. Verhoeff
Alexander Muacevic
Helen A. Shih
Felix Ehret
Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysis
Clinical and Translational Radiation Oncology
Vestibular schwannoma
Acoustic neuroma
Stereotactic radiosurgery
Radiosurgery
Reirradiation
title Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysis
title_full Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysis
title_fullStr Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysis
title_full_unstemmed Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysis
title_short Reirradiation with stereotactic radiosurgery for vestibular schwannomas – a systematic review and meta-analysis
title_sort reirradiation with stereotactic radiosurgery for vestibular schwannomas a systematic review and meta analysis
topic Vestibular schwannoma
Acoustic neuroma
Stereotactic radiosurgery
Radiosurgery
Reirradiation
url http://www.sciencedirect.com/science/article/pii/S2405630825000813
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