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McCain will remain in Senate as brain cancer treatment continues

Following an MRI Monday, Sen. John McCain, R-Arizona, will continue radiation and chemotherapy as part of his brain cancer treatment, in accordance with the recommendation of his doctors, but he plans to remain in the Senate, according to a statement released by his office.

"Senator McCain received an MRI at the National Institutes of Health (NIH) in Bethesda, Maryland yesterday," the statement reads. "Following the advice of his doctors, Senator McCain will continue to receive targeted radiation and chemotherapy treatments at NIH while maintaining a regular work schedule in the United States Senate."

The Arizona senator was diagnosed with a cancerous brain tumor in July following a procedure to remove a blood clot. He underwent his first round of chemotherapy and radiation in mid-August and has since returned to the Senate.

Monday, McCain called his brain cancer prognosis "pretty good," and said that while he has "faced other challenges," he's "very confident about getting through this as well."

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    Blair Guild is a politics reporter and video producer for CBS News Digital.