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Incident

Endoscopists detect fewer adenomas without AI after AI is introduced

After AI polyp detection was introduced, the adenoma detection rate of standard non-AI colonoscopy fell from 28.4% to 22.4%.

Sources checked when written 26 September 2026

What happened

Four Polish centres in the ACCEPT trial introduced AI polyp detection at the end of 2021 and then randomised colonoscopies to AI or no AI by examination date. Budzyń and colleagues compared 795 non-AI colonoscopies in the three months before AI with 648 non-AI colonoscopies in the three months after (September 2021 to March 2022). The adenoma detection rate fell from 28.4% to 22.4%, an absolute difference of -6.0 percentage points (95% CI -10.5 to -1.6), and exposure to AI was independently associated with lower detection (odds ratio 0.69). The study is observational and retrospective; the authors say continuous AI exposure 'might' reduce unaided performance.[1]

Documented harm

No individual harm documented; lower adenoma detection is a recognised quality marker associated with interval cancer risk (not measured in this study).

What it teaches

Sources

  1. Endoscopist deskilling risk after exposure to artificial intelligence in colonoscopy: a multicentre, observational study. The Lancet Gastroenterology & Hepatology 10(10):896-903, 12 August 2025. Primary Peer-reviewed · link checked 2026-09-26

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