Noelle, if it were me, I'd get treatment soon. 22 mm is not all that small and is widely considered a medium-size tumor. But semantics aside, a 22mm AN typically (and I stress the word "typically," because only your MRI would show this for certain) would be getting pretty close to your brainstem, if not already beginning to press against it. You don't want it to get much bigger before getting it treated.
If you are considering radiation treatment at all, you want to act before the tumor reaches 3 cm in size. Most doctors won't treat a tumor exceeding 3 cm in size with radiation.
Especially considering your symptoms are worsening, your body is trying to tell you that you don't have the luxury to wait much longer. The better condition your cranial nerves are before getting treatment, the better-preserved their function will be after treatment.
FWIW, statistically speaking with your size tumor, you have a better chance of retaining your hearing and avoiding facial paralysis with radiation treatment than you do with surgical resection. But many people have great outcomes from surgery. It's a decision only you can and should make. But if you haven't considered all the available options, I think it's important you do so. Like Jim said, you're the one with the tumor, not your doctor. So please don't rely on the opinion of one doctor alone. Inform yourself, seek additional professional opinions and then go with your gut. You're the boss!
Best wishes,
TW
