Hi KarinPaul and welcome.
I can share that approx, a few months post-CK, there was diminished hearing loss in my AN ear with slight "fullness" feeling in my non-AN ear. I informed my radio-onc and neuro-onc (who follows me post-CK) and they put me on anti-inflammatories to help keep any edema (swelling) in check. My hearing issued resolved itself shortly thereafter and my hearing has remained at the same level, pre-CK.
My suggestion is to inform your CK radio-onc or neuro-onc (who should be following you, post-CK), make them aware of the issue to see if they recommend a possible round of anti-inflammatories or... if need be, order an MRI to see if there is any swelling going on.
Another suggestion is to check with the docs on the CK Patient Support Site (
www.cyberknife.com). They volunteer their time and energy to answer patient questions and there is a section there for "Acoustic Neuroma"
Hang in there... again, welcome.. .and please keep us posted on how you are doing.
Phyl