Colonoscopy not applicable
[QUOTE=Licentious;5856934]Yearly colonoscopy is best.
No reason for prostate issues.[/QUOTE]Sorry guy. You got your cancers confused. Colonoscopy is applicable for colon cancer and will only find very advanced prostate cancer that has spread to the colon. Way too late to be of much help.
PSA (prostate specific antigen) blood test looks at the level of a normally present auto-immune response hormone that is specific to the prostate. Elevated levels of of this antigen are a direct measure of problems if some sort with the prostate. The inaccuracy factor with test is because the antigen levels will also be elevated by other prostate issues (infection, trauma, etc). Elevated antigen levels will usually result in repeating the blood test a week to a month later. If antigen levels return to normal or near normal levels, no further action is usually called for.
In my case, it took 3 years of intermittently elevated PSA levels and 2 prostate biopsies for me to decide to undergo the surgery. It's been more than 2 years since the surgery and I've resigned myself to living with the results. It's far from perfect but I am, apparently, cancer free. The ongoing consequences of the surgery have changed my life but I can expect to have a life now.