Hi there canyongirl... take a deep breath. If you have to have a brain tumor this is the one to have. You have 6 kids and you need to take your time and do some research on what treatment will best work with your life. A tumor of 22mm is not that big. It's not that small either but you most likely have time to think about this. Right now you are "terrified" which is a pretty normal reaction to hearing about a brain tumor pressing on your brain stem. I got the same news in April 2011 and had the same reaction. You don't want to make any decisions that are made out of fear.
Questions for you:
What are your symptoms?
Do you have balance issues?
What is the age of your youngest child?
Slow down... unless you are experiencing life threatening symptoms or you are unable to function you have time. I explored having surgery with Skull Base Institute and also at House Ear Institute. I opted for wait and watch which is working for me so far. I have a 6 year old, only one child but, I know that feeling of being a terrified mom. And I am sure you will hear from plenty of other moms on this wonderful forum. Feel free to email me directly if you need to talk.
Hang in there! It is not as bad as you think.