Joe Biden's announcement that he has been diagnosed with prostate cancer has revived questions about what health issues the former US president was dealing with while he was in the White House. In a statement on Sunday,

Biden, even after he has exited political life and as he faces a serious cancer diagnosis, remains a factor in the conversation about his party's political future.

The announcement Sunday that former President Joe Biden was diagnosed with advanced prostate cancer has some people wondering how the disease could have been missed.

Biden’s diagnosis comes at a difficult time for the former president, as scrutiny grows over his decision to run for a second term last year.

A resurfaced video of Joe Biden appearing to say he had cancer three years ago has raised questions following his public diagnosis.

“Every day is a nightmare, and evening is even worse,” he said. Dilbert the comic strip first appeared in 1989, poking fun at office culture. It ran for decades in numerous newspapers but disappeared following racist remarks by Adams. The Associated Press contributed to this report.

Prostate cancer is one of the most common types of cancer in the U.S., and often treatable. One urologist says Biden has good options ahead — largely thanks to recent advances in research.

Former President Joe Biden's office announced on Sunday that he was diagnosed with an "aggressive" form of prostate cancer. Biden's office said the cancer was diagnosed after "increasing urinary symptoms" and that it has metastasized,

Scott Adams shared the news on his podcast and expressed sympathy for the former president. “My life expectancy is maybe this summer,” he said.

Prostate cancer is getting easier to identify and treat. New drugs are easier to take, and work even better than their predecessors.

Alex Thompson, co-author of the new Biden book, "Original Sin," talks with The D.C. Brief about his reporting on Biden's decline

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