Aim:Stereotactic radiosurgery (SRS) has the potential to induce peritumoral edema (PTE), particularly in meningiomas located in the convexity, parasagittal, and parafalcine locations. This study aims to evaluate the incidence and identify the risk factors of SRS-induced PTE in the asymptomatic convexity, parasagittal, and parafalcine meningiomas without pre-existing PTE.Material and Methods:We retrospectively analyzed 52 patients with asymptomatic convexity, parasagittal, or parafalcine meningiomas without pre-existing PTE who underwent single-fraction Gamma Knife radiosurgery between 2019 and 2024. The median tumor volume and the maximum tumor diameter were 3.3 cc (range: 0.31–10.2 cc) and 2.0 cm (range: 0.98–3.1 cm), respectively. The median margin dose was 12 Gy (range: 11 Gy–13 Gy). The median radiological and clinical follow-up durations were 21 months (range: 6–65 months) and 26 months (range: 12–66 months), respectively. Results:SRS-induced PTE occurred in 5.8% of patients (n = 3), exclusively in elderly individuals (≥65 years) with parasagittal or parafalcine meningiomas. No cases were observed in convexity meningiomas (0/24). Multivariable analysis revealed a trend toward statistical significance for the association between age and SRS-induced PTE (p = 0.074). In the overall cohort, the incidence of SRS-induced PTE was significantly higher in elderly patients compared to younger patients (<65 years) (3/14 vs. 0/38, p = 0.016), and this difference remained significant within the parasagittal/parafalcine subgroup (3/7 vs. 0/21, p = 0.011).Conclusion:SRS appears to be a safe treatment modality in terms of PTE risk in patients aged below 65 years with asymptomatic convexity, parasagittal, or parafalcine meningiomas without pre-existing PTE. In contrast, elderly patients with parasagittal or parafalcine meningiomas may be more susceptible to SRS-induced PTE, thereby warranting a more cautious approach to SRS in this subgroup. Additional studies involving larger cohorts are warranted to validate these findings.