What is glioblastoma?

What is glioblastoma?

Sen. John McCain (R-Ariz.) has been diagnosed with an aggressive and lethal cancer called glioblastoma. Here's what you need to know about it. Subscribe to The Washington Post on YouTube: http://bit.ly/2qiJ4dy Follow us: Twitter:   / washingtonpost   Instagram:   / washingtonpost   Facebook:   / washingtonpost