Brokaw, 74, was revealed to have multiple myeloma, a cancer of the plasma cells in which abnormal plasma cells that normally produce antibodies accumulate in the bone marrow. According to TV Guide, the cancer was diagnosed at the Mayo Clinic back in August.
Brian Williams, who took over for Brokaw on NBC's Nightly News in 2004, announced the news on during the show Tuesday evening, telling viewers that Brokaw and his doctors are encouraged by his progress with treatment while simultaneously continuing to work.
Williams added that NBC would be airing some of Brokaw's reporting as part of their Sochi Olympic coverage later this week. He also joked that Brokaw might be joining Bruce Springsteen's newly-announced tour in Australia "just to give Bruce a bump of some added publicity."
Brokaw said in a statement released by NBC today that he remains "very optimistic about the future and look forward to continuing my life, my work and adventures still to come."
"I'm still the luckiest guy I know," he said, adding that while he is grateful for the interest in his condition, he wishes to keep the diagnosis and treatment a private matter.
Brokaw began his NBC News career in 1966 and began co-anchoring Nightly News in 1982. He was the sole anchor of the evening program from 1983-2004 and remains a special correspondent with the network.