I found this site prostatecancersymptoms.info
what I understood that prostate
Cancer have symptoms,did any one know if it have or not?
Sometimes you will experience symptoms such as trouble urinating or pain on urination. Though symtoms do not always appear until it's too late and you already have cancer, it's very important to have your prostate checked once a year. Any type of cancer can spread to other organs in your body. if you are concerned and do have some symptoms, see your doctor early on. an early diagnosis is the best way to keep cancer in check.
There ARE symptoms but in the early stages the ONLY one worth noting is to be found by physical examination (the rectal digital exam). Other symptoms are to be found in the sampling of the blood for antigens (known as a PSA test) although a negative on this test is not definitive that there is NO cancer.
The best method is to have physical exam every year and a PSA test at that time.
Once any visible manistation of the disease is determined, (usually severe pain in some joint or body area) it is usually too late to do much for it as the cancer has matasticized into the blood stream and settled into other major organs, bones, etc.
Many times there are no prostate cancer symptoms, therefore all men need a PSA exam.