What researchers considered the start of the era of widespread psa testing. The researchers in particular wanted to know about patients who had advanced prostate cancer - which spreads to other areas - at the time of diagnosis. Metastatic prostate cancer is often considered incurable however if left untreated, significant symptoms may occur. After reviewing the 2008 data, the researchers found that 8,000 men had metastasized prostate cancer at the time of their diagnosis. viagra canada cheapest Using a mathematical formula based on pre-psa metastatic prostate cancer rates, the researchers determined that there would be approximately 25,000 cases of metastatic prostate cancer diagnosed. viagra without a doctor prescription That's an additional 17,000 cases, three times more than the actual number of cases discovered in 2008, suggesting the tests are catching cancers early which may become deadly. viagra canada "our findings are very important in light of the recent controversy over psa testing," dr. Edward messing, chair of the urology department at the university of rochester medical center in new york, said in a press release. viagra pill effects "although there are trade-offs associated with the psa test and many factors influence the disease outcome, our data clearly indicate that not doing the psa test will result in many more men presenting with far advanced prostate cancer. " "almost all men with clinically apparent metastases at initial diagnosis will die from prostate cancer," he added. cheap viagra on line Dr. Michael lefevre, a professor of family medicine at the university of missouri who served as co-chair of the u. S. Preventive services task force criticized the study to webmd. "this study is not a randomized trial, and the results don't tell us much about whether screening reduces a man's chances of having metastatic prostate cancer," lefevre said. "since death from prostate cancer will nearly always be preceded by metastatic disease, one would expect a significant decline in metastatic disease to be accompanied by a significant reduction in deaths. But that is not what the clinical trials show. " prostate cancer is the most common cancer among men and the second-leading cause of cancer death in men. Nearly 242,000 men will be diagnosed with prostate cancer in 2012, the national cancer institute estimates, and more than 28,000 will die. generic viagra The american cancer society recommends that men make an informed decision about whether to take a psa test after discussing the risks and benefits with their doctor. viagra eye problems © 2012 cbs interactive inc. All rights reserved. Popular in health deadly meningitis outbreak in u. viagra no prescription S. Rare form of meningitis has sickened more than hundred people in ten u. natural viagra gnc S. States deadliest states for teen drivers which u. viagra for sale S. State has the most fatal teen car cras.