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

Meghan McCain said Saturday that her father, Sen. John McCainJohn Sidney McCainCNN's Ana Navarro to host Biden roundtable on making 'Trump a one-term president' Mark Kelly clinches Democratic Senate nod in Arizona Prominent conservatives question Jerry Falwell Jr. vacation photo 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 FlakeCheney clashes with Trump Sessions-Tuberville Senate runoff heats up in Alabama GOP lawmakers stick to Trump amid new criticism 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.