president trump put out this statement that reads: former president obama tweetd in part cancer doesn'tnow what it's up against. give it hell, john. >>> and senator lindsey graham says he and mccain spoke briefly with mccain insisting he'd be back. >> we talked about five minutes, you know, it's going to be a tough way for it but he says i've been through worse. >> the 80-year-old mccain had surgery last week to remove a blood clot above his eye. doctors say analysis of the clot revealed the cancer. >>> and just about half an hour ago senator mccain himself tweeted i greatly appreciate the outpouring of support. unfortunately for my sparring partners in congress, i'll be back soon. so that stand by. happy to hear that. >>> senator mccain is diagnosed with glioblastoma. it's the same cancer that killed beau biden and senator ted kennedy. kenneth craig has more about that possible treatments and outcome. >> reporter: glioblastoma is an aggressive form of brain cancer that can be tough to treat. >> a glee yo' blastoma is the most common and unfortunately also the most malignant primary bra