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Prostate Cancer
Treatment Guide™

Prostate Cancer Glossary



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Cryotherapy & Cryosurgery




Robotic Prostatectomy


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Ultrasound (HIFU)

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Tumor Marker for Prostate Cancer

A tumor marker is a chemical produced by the body. When the body begins to develop a tumor, either the body or the tumor will begin to produce a chemical that is specific to a certain type of cancer. Doctors can measure the volume of a tumor marker and determine the tumor’s size. In the case of prostate cancer, the tumor marker is prostate-specific antigen or PSA. The prostate gland constantly produces small amounts of PSA, some of which enters the blood stream. When the prostate gland grows in size, the amount of PSA in the blood stream increases. Doctors can use the PSA test to measure the amount of prostate specific antigen. If the PSA amount is high or the PSA velocity is high, doctors may use other tests such as the digital rectal exam or the prostate biopsy to search for prostate cancer. Other benign conditions, such as benign prostatic hyperplasia, however, may also account for an increase in the amount of prostate-specific antigen.




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