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Meghan McCain says John McCain 'doing really good' in cancer fight

Meghan McCain said Saturday that her father, Sen. John McCainJohn Sidney McCainComey donates maximum amount to Democratic challenger in Virginia House race Live coverage: McSally clashes with Sinema in Arizona Senate debate Is there difference between good and bad online election targeting? MORE (R-Ariz.), is doing well in his fight against brain cancer. 

"He's doing really good, all things considered," Meghan McCain said on CNN. "He had sort of a bad bout at Christmas time. He was hospitalized at Walter Reed. He had ramifications from his chemotherapy. He had pneumonia. But he's made this, like, really incredible comeback." 

John McCain was diagnosed in July with glioblastoma, an aggressive form of brain cancer, after he underwent a minor procedure to remove a block clot from above his left eye. 

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Since then, John McCain has undergone rounds of chemotherapy and radiation at the National Institutes of Health in Bethesda, Md., near Walter Reed. 

Sen. Jeff FlakeJeffrey (Jeff) Lane FlakeIMF's Christine Lagarde delays trip to Middle East Saudi mystery drives wedge between Trump, GOP Election Countdown: Dems outraise GOP in final stretch | 2018 midterms already most expensive in history | What to watch in second Cruz-O'Rourke debate | Trump raises 0M for reelection | Why Dems fear Avenatti's approach MORE (R-Ariz.) said he visited with John McCain Saturday, and that his Senate colleague appears to be "working hard and gaining strength."

John McCain returned to Arizona in December, and has been doing physical therapy, though there has not been an official update on the senator's health in almost two months.