Prostate cancer sifts checking the method is queried

Prostate cancer sifts checking the method is queried
Liao LianMing

U.S.A. prevents the medical association to point out on " magazine of American preventive medicine " recently, the present clinical evidence is not enough to support the rectum to mean examining and prostate -specific antigen (PSA) Sift and check prostate cancer and prevent and cure this effective statement.

Prostate cancer is one of man's main tumours. Sifted the popularization that is checked because of prostate cancer in the 1990s of last century, the discovery rate of prostate cancer reached the historical peak. Check to the sieve without symptom prostate cancer the method mainly means examining for the rectum and serum PSA is determined at present. U.S.A. secrete in the the intersection of recommendation and guide that urine learn proposing manning over the 50 or estimating, surviving over 10 time man of year should carry on PSA sift, check. And learn to advise this kind of group to mean examining and sifting and checking with PSA the rectum at the same time in U.S.A. cancer. But the rectum means examining the sensitiveness to prostate cancer and varying with each individual, the low one is only 18%, the high one can be up to 68%. When PSA density is normal, the rectum means only 4%- 33% of positive prediction rate that are examined.

According to analyze to literature before the 2007 U.S.A. prevent from medical association think rectum refer to examine and PSA sift check, can not reduce mortality, prostate of cancer. On the contrary, may bring extra mental burden to patient while being positive while being false, prostate live examine, can even erupt hematuria, courageous and upright seminal fluid simultaneously and infect. It may delayed treating but false negative. The expert even thinks because some patients' prostate cancer develops very slow, will not even present obvious symptom or death, so even if their sieve checks the result is real and positive, but treating may bring very great agony to patient, thus influence their life quality seriously. Two random experiments finishing up until now though verify the rectum means examining and PSA sifts and checks that can find prostate cancer in early days, but not revealed that can reduce the mortality of prostate cancer. So learn to propose that must tell them pros and cons while carrying on the cancer general survey of prostate to the high-risk group.



Prostate cancer sifts checking the method is queried