Medical City Lewisville July 26, 2017

Doctors have diagnosed Senator John McCain with glioblastoma, an aggressive cancerous brain tumor. According to Dr. Ricky Kalra, Medical Director of Neurosurgery at Medical City Lewisville, this type of tumor is typically unforgiving and requires immediate chemotherapy or radiation.

Listen to Dr. Kalra's interview with CBS NewsRadio AM 1080 KRLD to learn more about this type of brain cancer.