Arizona July 20, 2017 8:32 am Senator John McCain Diagnosed with Brain Cancer After doctors removed a blood clot from above Sen. John McCain’s left eye on Friday, the Mayo Clinic released a statement addressing that the procedure revealed a brain tumor. US & World Videos 2:43 ‘On the Dot' to redevelop stretch of Dorchester Avenue 1:49 Finalists in math competition hope their model helps ease housing crisis 14:31 @Issue extra: Seth Moulton on pro-Palestinian protests, TikTok and more 2:31 Celtics preparing for pivotal Game 3 against Heat in Miami 1:17 Patriots player visits Franciscan Children's Hospital