Prostate Cancer Chapter 3
The vast majority (over 95%) of prostate cancers are adenocarcinomas, cancers that develop in glandular tissue. These tumorous growths develop in the tissue of the prostate gland, which fits tightly into its position behind the base of the penis, underneath the bladder, and in front of the rectum. The prostate produces prostatic fluid, which is a component of semen and helps to nourish and transport sperm.
Prostate cancer is a very common type of cancer. Prostate cancer is the second leading cause of cancer death in men, behind lung cancer. The American Cancer Society estimates that in 2009 there will be more than 190,000 new cases of prostate cancer. But very often the prognosis for a case of prostate cancer is good. Many prostate cancers grow only slowly, and, unlike most other cancers, prostate cancer doesn't necessarily metastasize outside of the gland. More than 90% of all cases are discovered when the disease is limited to the prostate and surrounding organs, and in these cases, nearly 100% of patients are expected to live at least 5 years after diagnosis. For all men with prostate cancer, the relative 5-year survival rate is 99%, and the relative 10-year survival rate is 93%. (The relative 5-year survival rate is the number of people who don't die from the cancer within the 5 years after the cancer is found.) More than 2 million men in the US who have had prostate cancer are still alive today.
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