Check your acid phosphatase regularly.
http://www.enotes.com/medicine-encyc...osphatase-test.
UNFORTUNATELY, a rising level of this enzyme is not a good sign as it usually metastasizes to the bones of the spine.
Fortunately there is now a screening test for antibodies (prostate specific antibody) that catches the majority of tumors when they are still localized. There is no reason that this test should not be part of the NORMAL screening of any male over 50 as it is not that expensive and just about ALL labs have the capability to carry it out. There have been some controversies about its practical prediction in healthy asymptomatic men, but is highly predictive once a mass has been found.
Also, too, the TUPR (trans urethral prostatic resection) has brought down the surgical morbidity tremendously as compared to the previous procedure that caused much long term suffering and had a high mortality rate.
Here is a link to understand and how to prepare for a TUPR.
http://www.nlm.nih.gov/medlineplus/t.../htm/index.htm
As our pathology professor always said, "if you live long enough, YOU will have dysplastic prostate cells expanding in your body, but MOST men don't live long enough to die from it."
It shows an almost one to one relationship with age as this study from Great Britain shows.