Former President Jimmy Carter broke the news at a Sunday school class.
Standing before 200 people at his church in Georgia, Carter told the crowd quote "When I went this week, they didn't find any cancer at all."
The 91-year-old Carter started treatment in August for melanoma that had spread from his liver to his brain.
At the time, he said his fate was "in the hands of God."
SOUNDBITE: FORMER U.S. PRESIDENT JIMMY CARTER, SAYING:
"When they said that they wanted to go ahead and treat it I'm perfectly at ease with that and I'm perfectly at ease with whatever comes."
Despite the diagnosis, Carter continued to volunteer, working to build homes for Habitat for Humanity, an organization he's been involved with since 1984.
The former President says he will continue to receive regular doses of immunotherapy treatments.