Donald Trump reacted to the news of Joe Biden’s prostate cancer diagnosis by flexing his own clean bill of health Monday. The president also followed his son’s lead in casting doubt on how long his predecessor had known about his “Stage 9” cancer.

Donald Trump misspoke in off-the-cuff remarks on May 19, saying he felt 'sad' to learn that Joe Biden has 'stage 9' prostate cancer. His comments came one day after Biden revealed he has stage 4 prostate cancer,

Donald Trump apparently believes Joe Biden has “Stage 9” cancer. There is no such thing as “Stage 9” cancer, but Trump repeated that twice Monday while talking to reporters about the former president’s revelation that he has aggressive prostate cancer that has spread to his bones.