Hi, Hubby has a large AVM in the cerebellum. Picked up by accident by a CT for headaches. anyway they also picked up a large aneurysm close to the avm and probably caused by the avm..The aneurysm was coiled and radiation was booked a few months later to hopefully deal to the AVM. it has been one year post radiation. Steriods were a buggar to get off but was the only thing to settle his head down at times (brain swelling from the radiation). Fatigue is still a bit troublesome and the odd headache. He was told that symptoms may come and go for a couple years but a small price to pay as opposed to the surgery which carried a very high risk and was not recommended. Good Luck with your treatment.