New Methods May Reduce the Need for Invasive Colonoscopy
There are newer, less-invasive ways to screen for colorectal cancer, but the claim that colonoscopy is simply being replaced is misleading.
Options that don’t require a traditional colonoscopy
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FIT (fecal immunochemical test): A stool test that looks for hidden blood. It’s typically done at home and repeated regularly.
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Stool DNA/FIT testing: Combines blood detection with testing for certain DNA changes associated with colorectal cancer.
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CT colonography (“virtual colonoscopy”): Uses CT imaging to create pictures of the colon without inserting a conventional colonoscope through the entire colon.
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Colon capsule endoscopy: In some settings, a person swallows a small capsule containing a camera that travels through the digestive tract.
Why colonoscopy is still important
A major advantage of conventional colonoscopy is that doctors can both find suspicious growths and remove polyps during the same procedure. A positive stool test or an abnormality found by another screening method generally requires follow-up colonoscopy.
The appropriate screening method depends on age, personal and family history, previous test results, symptoms, and risk factors.
Also, screening is different from investigating symptoms. If you have blood in your stool, unexplained weight loss, persistent changes in bowel habits, iron-deficiency anemia, or ongoing abdominal pain, don’t substitute a home screening test for medical evaluation.
Bottom line: Technology is providing more non-invasive colorectal screening options, but colonoscopy remains an important diagnostic and polyp-removal procedure. It hasn’t simply become obsolete.
