I haven't had a brain biopsy. But I can tell you I had a stroke in Jan. of 2010 and got epilespy in June of the year due to the stroke. My brain is is re-firing in the wrong place is what the dr. told me. So as far as your situation, I don't know, but I do understand it 100%
I have been in the hopital probably 3 months this year of 2011. Our problems with the brain - the doctors don't know crap. They try, but they don't know. If our brain was a broken arm, then they could set, put on a sling and see you in 4 weeks..
Any way. I wouldn't worry about the biosopy.
You are a good person and everything will be ok