Hi Mandy. I’m sorry to hear about your son. I think there are a number of members on “watch & wait” here on ijb.org. I know this is a scary diagnosis but, it’s better to hold off on surgery. Being a childhood survivor myself, any effects he has will impact his education, career, relationships, and retirement. And he’ll probably have some side-effects from the surgery that will affect his entire life. There are no guarantees with brain surgery and you can’t undo it once done. Advancements happen everyday, so why not wait for something even better than used today? Good luck.