Poster ViewingProstate Hypofractionated Radiation Therapy With a Rectal Spacer Comparing Moderate Hypofractionation (62 Gy at 3.1 Gy per Fraction) Versus Stereotactic Irradiation (37.5 Gy at 7.5 Gy per Fraction): Acute Toxicities from the RPAH2 Randomized Trial