In his first interview since his cancer diagnosis, Sen. John McCain (R-Ariz.) said his prognosis is "pretty good."
"I'm facing a challenge, but I've faced other challenges," McCain told CNN's Jake Tapper. "And I'm very confident about getting through this one as well."
The 81-year-old senator was diagnosed with brain cancer in July and is scheduled to have an MRI on Monday.
McCain acknowledged that the diagnosis has been difficult for his family, but said all of his test results so far have been "excellent."
He returned to Washington last week and said this week he will focus his efforts on a defense spending bill.
McCain told Tapper he hopes to beat the disease, but seemed to be at peace.
When asked how he wants to be remembered, McCain said: "He served his country, and not always right -- made a lot of mistakes, made a lot of errors -- but served his country, and I hope we could add, honorably."
The Associated Press contributed to this report.