re-irradiation meningioma

Hello, I would like to present a clinical case, It's a young 26 yrs male suffering from a meningioma relapse. Diagnosed in 2012 with L4-L5 grade I Meningioma, then partially excised. Relapse in 2015 same region but grade II meningioma, partially excised and irradiated to 54 Gy. Second...