What we can be sure of about Biden and the Democrats is that they never tell the truth. Now we're supposed to believe that poor old Demented Joe, with the most advanced medical teams in the world in charge of his health, all of a sudden has advanced cancer? They have to get rid of him now because they can't risk him talking. If he wanted to, he could take down the entire sick Democrat Party with him. Poor liberals, after just hanging their Mexican flag, will need to find an Iranian one now.
Very feasible that Biden and his doctors did not know about his prostate cancer prior to this recent finding.
PSA testing is not recommended after age 70 and if prostate cancer does occur after this age, it is typically is so slow growing that if would not result in death and standard treatment with surgery or radiation would not be recommended. And yes, he could have had this for years and not had any symptoms.