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Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), P-30 antigen, is a glycoprotein enzyme encoded in humans by the KLK3 gene.PSA is a member of the kallikrein-related peptidase family and is secreted by the epithelial cells of the prostate gland in men and the paraurethral glands in women.
However, checking blood PSA levels for prostate cancer screening is controversial and not necessarily indicated in every evaluation for BPH. [2] Benign prostatic hyperplasia and prostate cancer are both capable of increasing blood PSA levels and PSA elevation is unable to differentiate these two conditions well. [2]
[15] [16] PSA levels over 10 ng/mL indicate an even higher risk: over half of men in this group develop prostate cancer. [15] Men with high PSA levels are often recommended to repeat the blood test four to six weeks later, as PSA levels can fluctuate unrelated to prostate cancer. [17]
PSA levels between 4 and 10 suggest you could have about a 25 percent chance of prostate cancer, and levels over 10 signal that your chance of having the cancer is more than 50 percent.
The highest levels of acid phosphatase are found in metastasized prostate cancer. Diseases of the bone, such as Paget's disease or hyperparathyroidism , diseases of blood cells , such as sickle-cell disease or multiple myeloma or lysosomal storage diseases , such as Gaucher's disease , will show moderately increased levels.
Prostate-specific antigen. Prostate-specific antigen (PSA) is secreted by the epithelial cells of the prostate gland and can be detected in a sample of blood. [14] PSA is present in small quantities in the serum of men with healthy prostates, but is often elevated in the presence of prostate cancer or other prostate disorders. [15]
There are several reasons why PIN is the most likely prostate cancer precursor. [3] PIN is more common in men with prostate cancer. High grade PIN can be found in 85 to 100% of radical prostatectomy specimens, [4] nearby or even in connection with prostate cancer.
The cause is unknown. [1] Diagnosis involves ruling out other potential causes of the symptoms such as bacterial prostatitis, benign prostatic hyperplasia, overactive bladder, and cancer. [2] [5] Recommended treatments include multimodal therapy, physiotherapy, and a trial of alpha blocker medication or antibiotics in certain newly diagnosed ...
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