When is external beam radiation a viable treatment for prostate cancer?
EBRT can be used as the initial treatment for low-grade cancer that is still confined within the prostate gland or that has spread only to nearby tissue or lymph glands. It can also be used if the cancer is not completely removed or it recurs in the prostate bed after prostate surgery. If the disease is more advanced, radiation may be used to reduce the size of the tumor and to provide relief from present and possible future symptoms.