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.

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.

President Trump repeatedly referenced Biden's recent prostate cancer diagnosis as "Stage 9," casting doubt over his cognitive ability as no such thing exists.