I haven't had cyber knife radiation, but I had gamma knife radiation in 2017 on 2 meningiomas that were recurrences from a meningioma I had surgically removed in 2001. My original meningioma in 2001 was 5cm, about the size of a small orange. I had the surgery in Atlanta and my neurosurgeon felt he got all of it. The recurrences were actually small tails from the original tumor that were too small to be seen during the surgery.

One of the benefits of gamma knife radiation is that it can treat multiple brain tumors in one session. One of my tumors that recurred was very elongated in shape. It went from behind my eye to behind my nose. Because it was not "round" and compact like the "typical" meningioma, I was in the gamma knife machine for 2 1/2 hours. They programmed slightly overlapping spheres of radiation to treat the elongated shape and also treated the roundish shape meningioma at the same time. I have had follow up MRI's in each year since 2017. In 2018 and 2019, the recurrences were stable. They had not gotten any larger and one was a fraction smaller. I had an MRI last week in Atlanta for my 2020 annual follow up and I've sent the CD to my doctor at Mayo in Rochester and I am waiting for his evaluation.