Former President Jimmy Carter, who has been receiving treatment for cancer, said Sunday that he was free of the disease, The New York Times reports.

Carter, 91, had elective surgery in August when doctors discovered a small mass in his liver. However, the procedure showed that the cancer spread to other parts of his body, including his brain.

Carter, the 39th president, who served from 1977 to 1981, had treatment that included radiation and a drug named pembrolizumab. By November, Carter said he was responding well and the cancer was showing no further signs of growth.

While his doctors say it's premature to call him cured - they would need three to five years without legions to say that with confidence - they say his condition is proof that aggressive, varied treatments can have a positive effect.

Hooray for that, and we wish Carter many more happy, healthy years.