Welcome Annette, :hello:
Sorry to hear your husband is having seizure activity, but it's great that his tumor is still progression free after 14 years. That's wonderful! I have a tumor as well. I got rid of most of it with surgery and chemotherapy, but, though it is considered a low grade tumor, chances are it will return at a higher grade one day; could be next year, could be 20-30 years. :dontknow:
Anyway, fortunately, I haven't had a big seizure since a bit after surgery. I still have weird twitches, jerks, and tingling sensations now and again, but nothing too bad. But my dad who I live with and take care of still won't even let me stand on a chair to change a light bulb for fear that I might have a seizure. So yes, it seems to be harder on family.
I know it's hard to trust MRI's. When you experience new or increased symptoms, but the MRI shows no change, it makes you doubt yourself. But then when you experience something that you know isn't your imagination, it makes you feel like maybe the MRI has missed something. I think maybe both can be correct. You can have new or worse symptoms without having enough new tumor growth to show on the MRI...or at least not enough to worry the doctor. And new growth doesn't necessarily mean progression of the tumor.
All the best to you and your husband! And don't forget to take care of yourself, too!
P.S.
I don't know if you're interested, but if you have questions about the after-effects of radiosurgery or anything tumor related you can go to The American Brain Tumor Association site. CWE is better for seizure related issues, but there are some questions that are more likely to find an answers there. BTW, there are others there from outside the U.S.
http://www.inspire.com/groups/american-brain-tumor-association/discussions/