WASHINGTON — Arizona Sen. John McCain, the 2008 Republican presidential nominee with a well-known maverick streak that often vexes his GOP colleagues, has been diagnosed with a brain tumor, his office said in a statement Wednesday.
The 80-year-old lawmaker has glioblastoma, an aggressive cancer, according to doctors at the Mayo Clinic in Phoenix, where McCain had a blood clot removed from above his left eye last Friday. The senator and his family are reviewing further treatment, including a combination of chemotherapy and radiation.
"Subsequent tissue pathology revealed that a primary brain tumor known as a glioblastoma was associated with the blood clot," his office said in a statement.
About 20,000 people in the U.S. each year are diagnosed with a glioblastoma, a particularly aggressive type of brain tumor. The American Cancer Society puts the five-year survival rate for patients over 55 at about 4 percent.
The tumor digs tentacle-like roots into normal brain tissue. Patients fare best when surgeons can cut out all the visible tumor, which happened with McCain's tumor, according to his office. That isn't a cure; cancerous cells that aren't visible still tend to lurk, the reason McCain's doctors are considering further treatment, including chemotherapy and radiation.
It's the same type of tumor that struck McCain's close Democratic colleague in legislative battles, the late Ted Kennedy of Massachusetts.
The senator and chairman of the Armed Services Committee had been recovering at his Arizona home. His absence had forced Majority Leader Mitch McConnell, R-Ky., to delay action on health care legislation. McCain had been slated to oversee debate of the sweeping defense policy bill in the coming weeks.
As word spread of his diagnosis, President Donald Trump, former rival Barack Obama and McCain's Senate colleagues, Republicans and Democrats, offered their prayers and support.
"Senator John McCain has always been a fighter. Melania and I send our thoughts and prayers to Senator McCain, Cindy, and their entire family. Get well soon," Trump said.
Obama, who dashed McCain's dreams of the presidency, said in a tweet: "John McCain is an American hero & one of the bravest fighters I've ever known. Cancer doesn't know what it's up against. Give it hell, John."
A Navy pilot, McCain was shot down over Vietnam and held as a prisoner of war for 5½ years.
McConnell called McCain a "hero to our conference and a hero to our country. He has never shied from a fight and I know that he will face this challenge with the same extraordinary courage that has characterized his life."
Democratic Sen. Chris Coons of Delaware said McCain "is a fighter, and I am hopeful he will once again beat the odds."
Arizona Gov. Doug Ducey described McCain as "undoubtedly the toughest man in the United States Senate."
Politics aside, McCain and Bill Clinton developed a strong friendship, and the former president said: "As he's shown his entire life, don't bet against John McCain. Best wishes to him for a swift recovery."
McCain's office disclosed the removal of the blood clot late Saturday and said the senator was awaiting pathology reports. In the past, McCain had been treated for melanoma, but a primary tumor is unrelated. Doctors said McCain is recovering from his surgery amazingly well and his underlying health is excellent.
In a statement on Twitter, his daughter, Meghan McCain, spoke of the shock of the news and the anxiety over what happens next. "My love for my father is boundless and like any daughter I cannot and do not wish to be in a world without him. I have faith that those days remain far away," she said.
With his irascible grin and fighter-pilot moxie, McCain was elected to the Senate from Arizona six times, but twice thwarted in seeking the presidency.
An upstart presidential bid in 2000 didn't last long. Eight years later, he fought back from the brink of defeat to win the GOP nomination, only to be overpowered by Obama. McCain chose a little-known Alaska governor as his running mate in that race, and helped turn Sarah Palin into a national political figure.
After losing to Obama in an electoral landslide, McCain returned to the Senate, determined not to be defined by a failed presidential campaign. And when Republicans took control of the Senate in 2015, McCain embraced his new job as chairman of the powerful Armed Services Committee, eager to play a big role "in defeating the forces of radical Islam that want to destroy America."
Throughout his long tenure in Congress, McCain has played his role with trademark verve, at one hearing dismissing a protester by calling out, "Get out of here, you low-life scum."
He tangled with McConnell over campaign finance, joined forces with Democrats on immigration and most recently had a very public spat with Sen. Rand Paul. McCain said the Kentucky Republican was working for Russian President Vladimir Putin after he blocked a vote on allowing Montenegro into NATO. Paul said McCain had gotten "unhinged."
In 2016, McCain stuck by Trump at times seemingly through gritted teeth — until the release a month before the election of a lewd audio in which Trump said he could kiss and grab women. Declaring that the breaking point, McCain withdrew his support and said he would write in "some good conservative Republican who's qualified to be president."
He had largely held his tongue earlier in the campaign when Trump questioned his status as a war hero by saying: "He was a war hero because he was captured. I like people who weren't captured."
AP Medical Writer Lauran Neergaard and writer Nancy Benac contributed to this report.
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