It produces the fluid that transports sperm during ejaculation. Even though the cancer may appear limited to one part of the prostate, it may have spread to other areas of the gland. Therefore, the entire gland is treated. Prostate cancer is most commonly found in older men. The exact cause of prostate cancer is unknown.
Radiation kills cancer cells by interfering with their ability to reproduce.
The seeds only give a high dose of radiation to a small area, minimizing damage to the surrounding tissue. Studies have shown that these seeds are effective in destroying cancer cells. Before placing the implants, a physician will order an ultrasound of the prostate called a volume study. This will help determine the size and shape of the prostate. The volume study also will help determine the number of seeds to be placed into the gland.