Ezekiel Emanuel, a prominent Democratic figure, told “Morning Joe” the former president "did not develop [prostate cancer] in the last 100 to 200 days."

On May 18, former President Joe Biden’s staff announced he has an aggressive form of prostate cancer. In response, several social media users began circulating a three-year-old video clip of Biden as evidence that he knew about his diagnosis years before.

Recent studies show that survival for men with prostate cancer that has spread to the bone is just under two years. But this form of cancer, though aggressive, can sometimes be controlled. Here's what oncologists who treat prostate cancer say are the most common strategies for treating a cancer like Biden's, and some of the challenges.

Ezekiel Emanuel, an oncologist and professor who served as a COVID-19 advisor in the Biden administration, said Tuesday that former President Joe Biden "probably" had prostate cancer at the start of his presidency.

Around 37% of patients diagnosed with metastatic prostate cancer are alive after five years, according to the American Cancer Society.

President Joe Biden 's career came to an end in January after decades public service. On Sunday, May 18, a spokesperson for the former president, 82, has announced Biden has an "aggressive form" of prostate cancer that spread to the bone.

The famed East Bay cartoonist didn’t sugarcoat his situation, saying Monday that he’s in near-constant pain and that he doesn’t expect to live past this summer.

“Last week, President Joe Biden was seen for a new finding of a prostate nodule after experiencing increasing urinary symptoms. On Friday, he was diagnosed with prostate cancer, characterized by a Gleason score of 9 (Grade Group 5) with metastasis to the bone,” the statement from Biden’s office said.