Thanks, everyone. This is such a great discussion board!
Russ, the reason I think it's cancer is simple - 1 year ago I had an MRI because of a seizure. It was negative for tumors. Now I have a 4cm tumor that grew in a year. Growth like that is almost never benign, which is frightening. We'll see, but biopsy or not, the sucker is coming out.
To "mom", thanks as well. I realize the face stuff is supposed to be temporary, which is a relief. It's not a #1 concern, of course, but it's there. I initially went to the doctor for salivary gland symptoms that my doctor thought may have been a parotid gland tumor. The surgery I would have needed would have been much more disfiguring and potentially paralyzing as well.
Anyhow, please keep your fingers crossed that this isn't cancer. My gut is telling me it is. Malignant schwannomas are deadly, so I'm praying that I'm wrong.