Surgery – Prostate surgery:Tests for prostate cancer

Doctors routinely diagnose prostate cancer by measuring the amount of prostate-specific antigen (PSA), a protein produced by the prostate gland, in the blood, and by digital rectal examination (DRE). A higher-than-normal level of PSA indicates that something is amiss with the prostate, although it need not be cancer.


But PSA screening has a huge potential for error. DRE itself, riding a bicycle or sexual activity can temporarily increase PSA, resulting in considerable overdiagnosis of prostate cancer. In fact, in one study of 660 men who underwent prostate surgery, more than one-sixth of the non-palpable tumours diagnosed by screening were clinically insignificant and found not to warrant surgery after all (JAMA, 1994; 271: 368-74).


These newer tests can be used as a second opinion:


* The AMAS (anti-malignin antibody in serum) blood test, available from Oncolab Inc. in the US, and Quest Diagnostics in the UK, measures malignin, a blood molecule associated with malignant transformation of cells, and shown in more than 3000 double-blind studies to be raised in dormant cancer. The test is 95-per-cent accurate on first analysis, and up to 99-per-cent accurate on repeat analysis for the presence of any kind of cancer (Cancer Detect Prev, 1994; 18: 65-78; Int J Biol Markers, 1997; 12: 141-7).


* The free PSA test, which measures the percentage of PSA that is not bound to proteins in the blood. This test produces fewer false-positive results in those who don’t have cancer.

Connection error. Connection fail between instagram and your server. Please try again
What Doctors Don't Tell You Written by What Doctors Don't Tell You

Explore Wellness in 2021