The opportunity comes before cancer.
Colonoscopy can find precancerous polyps and remove the ones it finds, in the same exam.
What colonoscopy can do · National Cancer Institute
Finding and removing precancer.
A stool test checks a sample for signals. A colonoscopy looks at the colon directly, and polyps that are found can be removed during the procedure.
Colonoscopy First interpretation
The ability to find and remove precancer is the reason we favor high-quality colonoscopy as the starting test for people who are due, medically appropriate, willing, and have timely access.
Before Cancer