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,

Standard medical practice is to not test men who have a life expectancy of less than 10 years for prostate cancer.

Former President Joe Biden's office announced on May 18 that he had been diagnosed with an aggressive form of prostate cancer two days earlier, following the discovery of a prostate nodule. President Donald Trump and others have suggested,