Fig. 2From: Comparison of clinical outcomes in patients who underwent Gamma Knife radiosurgery for parasellar meningiomas with or without prior surgeryKaplan-Meier analysis of progression-free survival after Gamma Knife radiosurgery (GKRS) regarding surgery prior to GKRS. Log-rank test showed no difference of PFS between two groups (P = 0.229)Back to article page