The English used in this article or section may not be easy for everybody to understand. (February 2012)
There are many kinds of astrocytomas. They are separated into two categories; Low-grade astrocytomas and High-grade astrocytomas.
Low-grade astrocytomas usually grow slowly and stay in one place. Because of this, many of them can be treated just with surgery. Once the tumor is taken out, often no other treatment is needed. As long as they get treatment, after five years, 90% of people with these astrocytomas are still alive.
One example of a low-grade astrocytoma is pilocytic astrocytoma.