The possibility of tumor re-growth was candidly addressed by my neurosurgeon (Dr. Issac Goodrich) before he performed the AN removal surgery and even before I had agreed to engage his services. I just assumed that all nuerosurgeons planning AN surgery did this - but apparently not. They should.
Dr. Goodrich explained to me that no surgeon (who tries to save all of the important nerves in the area being operated on - which he did, very successfully) can ever get 100% of the tumor, so, he routinely recommends fractionalized radiation treatments (30 - over six weeks) within three or four months, post-op. I agreed. The radiation is intended to kill the cells of any tumor remnants and thus prevent it's re-growth. I was told by the radiation oncologist that FR has a very good success rate as well as very few negative side effects. I'll begin the FR treatments sometime in September (2006) with the understanding that in medicine, especially when dealing with Acoustic Nuromas, nothing can ever be 'guaranteed'.
Based on a CAT scan done 24 hours after the surgery, my doctor believes he was able to remove over 90% of the tumor. I'll have an MRI on 7/21 to see exactly what is left and we'll find out if he really did remove over 90%. I certainly hope so. I'll add the results of the post-op MRI to this post when I have them..
UPDATE: The MRI (taken on 7/21/06) showed less than 2 cm of AN tumor remaining...probably closer to 1cm. My nuerosurgeon couldn't tell the exact size for certain so, being a conservative physician, he purposely gave me a conservative estimate. If he's correct, that would indicate about 70% of the tumor was actually removed, perhaps even more, which I suspect because, since the surgery, all of my pre-op symptoms have either been relieved or have disappeared completely. Il have another MRI (scheduled for 9/5/06) - just before the radiation treatments commence - in order to give the radiation oncologist a fresh look at the 'target'. I am trusting that - between the surgical removal of the mass and the radiation treatments to kill the cells of the (remaining) tumor - I'll finally be done with this thing.