Radiation for Prostate Cancer

WHAT IS RADIATION THERAPY FOR PROSTATE CANCER? Radiation therapy uses high-energy rays to kill prostate cancer cells. Radiation can be the main treatment for prostate cancer (in place of surgery). It can also be used after surgery. Radiation is given either externally (outside the body) or internally (inside the body). You may get help from both types, together. The type offered to you will depend on the stage and grade of cancer, your total health and life expectancy, reach to care and your goals for treatment. WHAT IS EXTERNAL BEAM RADIATION THERAPY? External beam radiation therapy (EBRT) sends an aimed beam of radiation from outside to the prostate. It is delivered in daily doses for a number of weeks. Your radiologist will try to limit radiation going to healthy organs like the bladder and rectum, to limit reactions. • Standard EBRT uses the photon (x-ray). Photonbased external-beam x-rays can harm nearby healthy tissue. Instead, your doctor may be able to offer threedimensional conformal radiotherapy (3DCRT) or intensitymodulated radiotherapy (IMRT). • Proton Beam Therapy (PBT) uses the proton, a stronger radiation beam. A machine, called a synchrotron or cyclotron, is used to send radiation deeper into body tissue. Because the radiation does not go beyond the tumor, nearby tissue is not changed and there are less side effects. • Stereotactic Body Radiation Therapy (SBRT) carries large doses of proton radiation to exact zones of the body over just a few days. SBRT is often known by the names of the machines, like Gamma Knife®, X-Knife®, CyberKnife®, and Clinac®. WHAT IS INTERNAL RADIATION THERAPY? With internal radiation, radioactive matter is placed straight into the prostate using a hollow needle. There are two types: low dose rate (LDR) brachytherapy and high dose rate (HDR) brachytherapy. • LDR brachytherapy - is when your doctor puts radioactive “seeds” (the size of a rice grain) into the prostate. These seeds send out radiation, killing nearby cancer cells. In LDR, the seeds are left in the prostate even after treatment is done, and may still release radiation. • HDR brachytherapy - is when your doctor puts radiation into your prostate using a thin tube. The radiation source is only put in for a short time. Once your treatment is done, the material is removed. Anesthesia is needed to place needles for both LDR and HDR brachytherapy. You may need to stay in the hospital overnight. Sometimes radiation therapy is blended with hormone therapy to shrink the prostate to treat high-risk cancers. National Headquarters: 1000 Corporate Boulevard, Linthicum, MD 21090 Phone: 410-689-3990 • Fax: 410-689-3878 • 1-800-828-7866 • info@UrologyCareFoundation.orgwww.UrologyHealth.org Radiation For Prostate Cancer WHO IS A GOOD CANDIDATE FOR RADIATION THERAPY? Radiation therapy can be a good choice for: • Men whose prostate cancer is only in their prostate • Men whose prostate cancer has gone beyond the prostate to nearby organs and tissue, and who are using hormone therapy • Men who have had their prostate removed but who are at risk for the disease coming back (adjuvant treatment) • Men whose prostate cancer has recurred (returned after treatment) • Men with advanced prostate cancer who wish to reduce symptoms caused by the tumor WHAT ARE THE BENEFITS AND RISKS OF RADIATION THERAPY? The main benefit of radiation therapy is that it’s not surgery. Whether it is given externally or internally, this care is helpful for early stages of prostate cancer. On the other hand, some of the newer methods may be hard to find, or are very costly. The most common side effects of radiotherapy are incontinence (urine leaking) and bowel problems. Urinary problems often get better over time, but in some men, they never go away. Erectile dysfunction, along with impotence, is also likely. Many men also feel tired for a few weeks to months after treatment. If hormone therapy is used along with radiation, sexual side effects are more common. This can include loss of sex drive, hot flashes, weight gain, feeling tired, decreased bone thickness and depression. These side effects can be managed. They most often go away when hormone therapy is stopped. OTHER CONSIDERATIONS It helps to work with your radiologist before you start treatment to be ready for side effects that may happen. Follow-up visits with your healthcare team will help you address any new problems, early. Talk to your doctor about which treatment is right for you.

Prostate Cancer Basics

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