Cancer Survivor Says John McCain Can Fight Brain Tumor: 'It Doesn't Have to Be a Death Sentence'

Patients with glioblastoma tumors live an average of 15 months after receiving their diagnosis.

Sen. John McCain’s cancer diagnosis does not have to be a death sentence, according to a woman who suffered the same disease and beat it.

“Not that it’s easy,” Heather Knies told Inside Edition Thursday. “But if anyone can fight it, he can.”

Read: Sen. John McCain Diagnosed with Brain Cancer After Surgery to Remove Clot

The Phoenix resident says doctors gave her six months to live 10 years ago when they told her she had glioblastoma, an aggressive and fast-moving cancer. I didn’t believe it, and just said ‘Bring it.’’’

McCain’s office announced Wednesday the Arizona Republican had undergone emergency brain surgery for the removal of a malignant tumor. McCain initially was under the knife for the removal of a blood clot, but surgeons discovered the growth during the procedure.

Daughter Meghan did not appear on her Fox News show “Outnumbered” Thursday, instead deciding to fly to Arizona to be with her father.

Read: John McCain Defends Family of Fallen Muslim Soldier After Trump's Disparaging Comments

“My love for my father is boundless,” she said in a statement. “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.

“My rock, my hero, my dad,” she wrote.

The senator tweeted Thursday, “I greatly appreciate the outpouring of support — unfortunately for my sparring partners in Congress, I’ll be back soon, so stand-by!

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