A ganglioglioma is a rare type of brain tumor. It accounts for approximately 1 percent of all brain tumors. Gangliogliomas occur when a single cell in the brain starts to divide into more cells, forming a tumor.
This can occur when the cell randomly acquires changes (mutations) in genes that regulate how a cell divides. Most gangliogliomas grow slowly and are considered benign. However, up to 10 percent of gangliogliomas may grow more rapidly and become malignant, meaning the tumor affects the surrounding brain tissue.
The main treatment for ganglioglioma is removal of the entire tumor during surgery. If the entire tumor is not removed, it has the potential to recur and may require additional surgery or treatments, such as radiation therapy or chemotherapy.