Bob,
I'm going to try my best here to help.
Yes, you are certainly within the total margin of error in head MRI reads... now, please try to keep in mind one thing... the goal of all radio-treatments for AN's is to stop the growth.
As you already know, each person/doc/radiologist is going to read films differently from another. No 2 people are going to measure it the same. Heck, my team at BI (my neuro onc and my radio onc) don't even measure mine the same... I just take the "average" of the 2......
we know, going into radio-treatments (regardless of which one), the risk involved is hearing loss. Like you, I chose my radio treatment for hearing preservation. I'm so sorry that you are running into the SSD now, but as I noted in my other post to you, it's ok..... truly. "Deficits" in life can be well compensated by others. At least you do not have bilateral hearing loss and that, to me, is a grateful thing. marystro, a user here, had CK and yes, she lost most of her hearing. BUT, her AN stopped growing (at last check) and that is what we need to be thankful. Risks involved are shared with us in advance... as it was with you.... I'm sorry that this has now happened (the SSD).
I honestly do not see an indicator to go running into surgery. See what the team at MGH says but based on what you have shared, if the AN had grown significantly (ie: went from 11mm to 19 mm), then, I would see the concern. Your's has not and for that, I am grateful for this news. Keep us updated on what MGH says and we'll all be able to share more with you on Sunday.
Please hang in there!
Phyl