Fig. 8From: Primary versus postoperative gamma knife radiosurgery for intracranial benign meningiomas: a matched cohort retrospective studyA, Kaplan–Meier curve of proportion with radiation-induced edema of non-skull base tumors VS skull base tumors in primary GKRS group (p < 0.001). B, Kaplan–Meier curve of proportion with radiation-induced edema of preexisting PTE in primary GKRS group (p < 0.001). C, Kaplan–Meier curve of proportion with radiation-induced edema of non-skull base tumors VS skull base tumors in combined group (p = 0.003). D, Kaplan–Meier curve of proportion with radiation-induced edema of preexisting PTE in combined group (p = 0.026)Back to article page