ON THIS PAGE: You will find out more about what factors increase the chance of developing brain stem glioma. To see other pages in this guide, use the colored boxes on the right side of your screen, or click “Next” at the bottom.
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. Genetic conditions associated with a higher risk of developing a CNS tumor include Li-Fraumeni syndrome , neurofibromatosis type 1 (NF1),  nevoid basal cell carcinoma syndrome , tuberous sclerosis , and Turcot syndrome .
Choose “Next” (below, right) to continue reading this guide to learn about what symptoms brain stem glioma can cause. Or, use the colored boxes located on the right side of your screen to visit any section.