Research Article
Outcome of Elderly Patients with Meningioma after Image-Guided Stereotactic Radiotherapy: A Study of 100 Cases
Figure 2
PFS rates of group 1 and group 2. Patients with grade I meningioma or unknown histology showed PFS rates of 98.4% and 95.6% at 3 and 5 years, respectively; patients with grade II or III meningioma showed PFS rates of 36% after 3 years ().