PRIMARY OBJECTIVES:
I. To determine the maximum tolerated dose (MTD) with an upper limit of 45 Gray (Gy) in 5 fractions, in the delivery of stereotactic body radiation therapy (SBRT) to the prostate fossa.
SECONDARY OBJECTIVES:
I. To assess acute and late toxicities from treatment.
II. To assess biochemical progression-free survival.
III. To collect prospective quality-of-life data related to bowel, urinary, and sexual health.
OUTLINE: This is a dose-escalation study.
Patients receive 5 fractions of SBRT over 1.5 weeks.
After completion of study treatment, patients are followed up at 90 days and then periodically for 3 years.
