Are computer-aided detection systems effective at finding adenomas during screening?
Computer-aided detection (CADe) is software that watches the colonoscopy screen in real time and puts a small mark on spots that look like polyps. The goal is to help the doctor spot adenomas, which are growths that can turn into colon cancer. The short answer is yes: across dozens of randomized trials, CADe systems find more adenomas than standard colonoscopy alone 456. The bigger question is what kind of adenomas they find, and whether finding more of them actually prevents cancer.
What the research says
The evidence base is large. A network meta-analysis of 48 randomized trials with 38,986 patients found that several CADe systems raised the adenoma detection rate (ADR, the share of colonoscopies where at least one adenoma is found) compared with standard colonoscopy. ENDO-AID showed a risk ratio of 1.26, CADEYE 1.18, and GI Genius 1.15, all backed by moderate-confidence evidence 4. A separate review of 44 trials with 36,201 cases found ADR of 44.7 percent with CADe versus 36.7 percent without, a rate ratio of 1.21 5. A third meta-analysis of 28 trials with 23,861 participants found a 20 percent relative increase in ADR and a 55 percent drop in the adenoma miss rate, meaning fewer adenomas were left behind 6. These three reviews point the same direction even though they used different methods 456.
What to ask your doctor
- Does this endoscopy center use a computer-aided detection (CADe) system, and which one?
- How do you weigh finding more small adenomas against the extra polyp removals and follow-up that can come with it?
- Will using CADe change how often I need surveillance colonoscopy after polyps are removed?
- What is known about whether CADe lowers my risk of actually getting colon cancer, not just finding more polyps?
This question is drawn from common patient questions about Gastroenterology and answered using cited medical research. We do not provide individualized advice.