U.S. Sen. john McCain (R-Ariz.) said in an interview Sunday night that his doctors have given him a "very poor prognosis," as he continues to battle an aggressive form of brain cancer.
"So I just said, 'I understand. Now we're going to do what we can, get the best doctors we can find and do the best we can. And at the same time, celebrate with gratitude a life well-lived,'" McCain told CBS' "60 Minutes."
McCain underwent surgery in July to remove a blood clot that doctors later revealed was associated with glioblastoma, which is a very aggressive form of brain cancer. It's the same form of cancer that killed former Sen. Edward M. Kennedy in 2009.
Despite the bleak prognosis, McCain has continued his work in the Senate while undergoing chemotherapy and radiation.
"I am more energetic, and more engaged, as a result of this because I know that I've got to do everything I can to serve this country while I can," McCain added.