National Health & Safety An experimental treatment made rectal cancer tumors disappear for a small trial group 5:29pm June 06, 2022 Health Medical Treatments National Share URL copied to clipboard! Copyright 2022 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered National 78th Tony Awards preview: What to expect on Broadway's biggest night by Scott Detrow Arts How to manage the flurry of text messages on any given day? Texting etiquette explained. 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate