Former Kansas Sen. Bob Dole announced Thursday he began treatment this week for stage 4 lung cancer

RUSH LIMBAUGH, CONSERVATIVE TALK RADIO PIONEER, DEAD AT 70

"While I certainly have some hurdles ahead, I also know that I join millions of Americans who face significant health challenges of their own," he said in a statement. 

Dole, 97, is a World War II veteran, former Senate Majority Leader and was the Republican Party's 1996 presidential nominee. His political career spanned nearly five decades.

TRUMP REVEALS STORY BEHIND RUSH LIMBAUGH'S PRESIDENTIAL MEDAL OF FREEDOM

Stage 4 cancer is the most advanced stage of the illness and is the least likely to be cured or end up in remission. 

CLICK HERE FOR THE FOX NEWS APP

The former senator's announcement comes a day after conservative talk show pioneer Rush Limbaugh died following a year-long battle with stage 4 lung cancer.