It’s difficult for me to understand the logic for why the men who have been treated would need to continue with annual testing whereas men who have never been diagnosed can stop.
Why would a man whose last treatment was 5 years ago and his PSA consistently demonstrates that there is no evidence of cancer, assuming he’s not taking HT, need to continue with annual tests but another man who’s never been diagnosed with PC and whose PSA has always been normal and had no suspicions at last DRE can stop? It seems to me that the man who’s never been diagnosed has a greater likelihood of having PC than the man who has been treated and shown the treatment to be effective.
It’s been shown that the odds of an untreated man over 50 having PC generally parallels that of his age. So that man of 70 would have a 70% chance of having some cancer if his prostate were to be examined thoroughly. Yet the man who has been treated, shows no evidence of cancer, needs to have a PSA test. Why is that?
It's a rather straightforward answer which is based on what they call the "natural history" of prostate cancer. Makes entire sense to me, and to the prostate care professionals who recommend & support this.