Consensus guidelines recommend sacral SBRT volumes larger than that to which you may be accustomed, and this retrospective look at 112 sacral SBRT courses at a single center in Toronto demonstrates double the rate of local failure at 2 years (19% v 40%) when contours were underdrawn relative to these guidelines. | Moore-Palhares, Int J Radiat Oncol Biol Phys 2024
