Glioma is a catchall term that includes many different types of tumor, including astrocytomas, oligodendrogliomas, and ependymomas, according to the American Cancer Society.
An estimated 21,810 people will be diagnosed with malignant tumors of the brain or spinal cord this year in the United States�"1.3% of all cancers, responsible for 2.2% of cancer-related deaths. Gliomas make up about 40% of all brain tumors and can be benign or malignant. Kennedy's, located in the left parietal lobe, is malignant. Gliomas are most likely to occur in those aged 75 to 84.