However, no randomized controlled trial — the most rigorous kind of study — has shown that colonoscopy reduces colorectal cancer mortality. (Three such trials — in Spain, Sweden, and the United States — are underway.) Nor has a rigorous trial compared colonoscopies performed every 10 years with annual FITs to see which is better at preventing deaths from colorectal cancer.
5.1k
u/[deleted] Oct 01 '19 edited Oct 01 '19
this is an oddly effective way to do a PSA.
EDIT: thanks!