What is a rectal spacer and do they help reduce side-effects from prostate radiation??! That's today's topic on GU Cast. Renu caught up with rectal spacer enthusiasts Professor Peter Orio (Dana Farber Cancer Institute) and Associate Professor Shankar Siva (Peter MacCallum Cancer Centre) in downtown Melbourne this week to learn all about this topic. Thanks to our friends at Icon Cancer Centre who supported Peter's educational tour to Australia this week. Also watch full video on YouTubeLinks:Randomised trial of Barrigel rectal spacer in JAMA Oncology 2023 https://jamanetwork.com/journals/jamaoncology/fullarticle/2801296