A leading oncologist who worked for former President Biden has joined those expressing shock that his prostate cancer was not detected earlier — suggesting the oldest-ever president may even have had it for “a decade.

President Trump said Monday that he was surprised that Joseph R. Biden Jr.’s cancer diagnosis was not made public a “long time ago,” seeming to suggest without evidence that the former president’s cancer was not newly discovered and had been covered up.

The news of the former president's illness, coupled with the damage to Biden-world’s credibility when it comes to his fitness, have led to speculation about a cover-up.