Abstract
Objective
The optimal management of asymptomatic, skull-based meningiomas is not well defined. The aim of this study is to compare the imaging and clinical outcomes of patients with asymptomatic, skull-based meningiomas managed either with upfront stereotactic radiosurgery (SRS) or active surveillance.
Methods
This retrospective, multicenter study involved patients with asymptomatic, skull-based meningiomas. The study end-points included local tumor control and the development of new neurological deficits attributable to the tumor. Factors associated with tumor progression and neurological morbidity were also analyzed.
Results
The combined unmatched cohort included 417 patients. Following propensity score matching for age, tumor volume, and follow-up 110 patients remained in each cohort. Tumor control was achieved in 98.2% and 61.8% of the SRS and active surveillance cohorts, respectively. SRS was associated with superior local tumor control (p < 0.001, HR = 0.01, 95% CI = 0.002–0.13) compared to active surveillance. Three patients (2.7%) in the SRS cohort and six (5.5%) in the active surveillance cohort exhibited neurological deterioration. One (0.9%) patient in the SRS-treated and 11 (10%) patients in the active surveillance cohort required surgical management of their meningioma during follow-up.
Conclusions
SRS is associated with superior local control of asymptomatic, skull-based meningiomas as compared to active surveillance and does so with low morbidity rates. SRS should be offered as an alternative to active surveillance as the initial management of asymptomatic skull base meningiomas. Active surveillance policies do not currently specify the optimal time to intervention when meningioma growth is noted. Our results indicate that if active surveillance is the initial management of choice, SRS should be recommended when radiologic tumor progression is noted and prior to clinical progression.
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Data availability
The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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Conceptualization: Jason Sheehan; Methodology: Jason Sheehan; Formal analysis and investigation: Georgios Mantziaris, Stylianos Pikis, Jason Sheehan; Writing—original draft preparation: Georgios Mantziaris; Writing—review and editing: All authors; Supervision: Jason Sheehan.
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L. Dade Lunsford is a shareholder in Elekta AB, the manufacturer of some radiosurgical devices. Roman Liscak is a consultant for Elekta AB. All remaining authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript.
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The participating centers obtained approval by the local institutional review boards for the study and for sharing de-identified data with the coordinating office.
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Mantziaris, G., Pikis, S., Samanci, Y. et al. Stereotactic radiosurgery versus active surveillance for asymptomatic, skull-based meningiomas: an international, multicenter matched cohort study. J Neurooncol 156, 509–518 (2022). https://doi.org/10.1007/s11060-021-03923-3
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DOI: https://doi.org/10.1007/s11060-021-03923-3