Adult pilocytic astrocytomas are rare creatures. Over 24 years ago I had surgery at Mayo Clinic to remove one. I was 29 years old at the time. The tumor has never come back, but I started having grand mal seizures (again) about three years ago. Mayo Clinic has a great team of doctors. Read about these types tumors on the internet, write down questions and work with the doctors there until you're satisfied with their answers. You are the one in control.