Although my husband was not able to undergo surgery for his tumor in the brain stem, I have definitely heard from others that these kinds of things can happen after surgery. What I would suggest to you is to look on the internet and find out exactly what things that region of the brain controls. For instance, my husbands tumor is in the pons and medulla and these areas control vision, hearing, and mobility. If his tumor were to grow he could lose use of those functions.
I know the entire situation must be devastating and overwhelming for you. My husband is 33 and we have a 2 year old. It's tough, and I understand what you are going through. All I can say is believe that good things can and will happen, be his strongest advocate by learning all you can about his disease, never, NEVER stop researching treatment options (don't listen to and settle for the statistics), and see the blessing in each day that you are given together.
Take care,
Mary
w/o Steve,33
AAIII brain stem
dx 12/05
tx chemo/rads