Subscribe to Breaking News emails

You have successfully subscribed to the Breaking News email.

Subscribe today to be the first to to know about breaking news and special reports.

What is Glioblastoma?

Like Maria Menounos's mother, Litsa, Senator John McCain was diagnosed with a brain cancer called Glioblastoma. We asked Dr. Ray Chu, a neurosurgeon at Cedar-Sinai Medical Center, and one of the doctors who operated on both Litsa and Maria, what is Glioblastoma?

Best of NBC News

Play All