RATIONALE: Radiation therapy uses high-energy x-rays to kill tumor cells. Specialized
radiation therapy that delivers a high dose of radiation directly to the tumor may kill more
tumor cells and cause less damage to normal tissue. Given radiation therapy in different ways
may kill more tumor cells.
PURPOSE: This randomized phase II trial studies radiation therapy to see how well it works in
treating patients with prostate cancer.
Prostate Cancer, Psychosocial Effects of Cancer and Its Treatment, Radiation Toxicity, Sexual Dysfunction