Prostate Cancer
Definition
Prostate cancer is a disease in which the cells of the prostate become abnormal. They start to grow uncontrollably, forming tumors. A tumor is a mass or lump of tissue made of abnormal cells. Tumors may be malignant or benign. A malignant tumor can spread to other parts of the body. Malignant tumors are cancerous. Benign tumors cannot spread to other parts of the body.
Description
The prostate is one of the major male sex glands. It is about the size of a walnut and lies just behind the urinary bladder. Together with the testicles and seminal vesicles, the prostate produces the fluid that makes up semen.
Prostate cancer is the most common form of cancer among men in the United States. It is the second-leading cause of cancer deaths. According to the American Cancer Society there were approximately 179,300 new cases of prostate cancer diagnosed in the United States in 1999. About thirty-seven thousand American men died of the disease in 1999.
Prostate cancer affects black men twice as often as it does white men. The mortality rate among blacks is also twice as great. African American men have the highest rate of prostate cancer in the world.
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