ON THIS PAGE: You will find out more about the factors that increase the chance of developing brain stem glioma. To see other pages in this guide, use the menu on the side of your screen.
A risk factor is anything that increases a person’s chance of developing a tumor. Although risk factors often influence the development of a tumor, most do not directly cause a tumor. Some people with several risk factors never develop a tumor, while others with no known risk factors do.
Doctors and researchers don’t know what causes most childhood tumors, including brain stem glioma. There is some evidence that genetic factors may play a role in a small percentage of brain stem gliomas.
The following genetic conditions are associated with a higher risk of developing a CNS tumor:
- Li-Fraumeni syndrome 
- Neurofibromatosis type 1 (NF1) 
- Nevoid basal cell carcinoma syndrome 
- Tuberous sclerosis 
- Turcot syndrome 
The next section in this guide is Symptoms and Signs  and it explains what body changes or medical problems this disease can cause. Or, use the menu on the side of your screen to choose another section to continue reading this guide.