I agree with Cityview and ANSyney: be diligent, do your homework, ask questions, be informed, get those semiannual MRIs, listen to your heart and mind (W&W is as much an action as is having treatment) stay personally and medically focused on what lays ahead.
For w&waiters, a 'stable' for years, smallish tumor doesn't necessarily mean all is well. I am reminded about this by a frequent poster on the Facebook AN Support Group who cites an experience that despite having a stable, untreated 4 mm AN for many years, the hearing was totally lost (neurotoxins from the tumor) and worsening vertigo (spinning), among other symptoms, is the daily norm. It's all an individual decision, and there is no one best way, yet, to cope with this nefarious medial condition. Maybe someday there will be a medical breakthrough, wouldn't that be grand?!