← Issue №12/ week of Sep 20, 2026/Endoscopy

Diagnostic performance of the Japan Narrow-Band Imaging Expert Team and pit pattern classifications for small polyps using next-generation endoscopy.

From GI Signals issue №12: what this paper found, what it changes, and where it sits against the current standard of care, reviewed by Simon Mathews, MD.

Endoscopy prospective cohort · n=1,830 · Sep 17, 2026 · Endoscopy · IF 11.8

Diagnostic performance of the Japan Narrow-Band Imaging Expert Team and pit pattern classifications for small polyps using next-generation endoscopy.

New evidencecolonoscopypolypectomycomputer-aided detectionadenoma
Clinical takeawayConsider using JNET classification for optical diagnosis of small colorectal lesions (<10 mm) in routine practice, as it performs consistently across endoscopist expertise levels.
What it foundJNET showed similar diagnostic performance across expertise levels (sensitivity, specificity, NPV) compared to pit pattern classification, which had 5.01 percentage points lower sensitivity (95% CI, 1.23-9.08) and 10.00 percentage points lower NPV (95% CI, 1.37-18.56) in non-experts vs experts.
ContextConfirms JNET as a reliable tool for optical diagnosis of small colorectal lesions (<10 mm), reducing reliance on endoscopist expertise compared to pit pattern classification. Exploratory analysis suggests greater variability in pit pattern classification performance based on expertise.
No standard claimed for this paper

Every paper is compared to the standard governing its question. This one is not: either no standard in the corpus matches it, or the comparison did not hold up on review and was withdrawn rather than published unverified. Both are logged.

Sakamoto T … Saito Y · Endoscopy · IF 11.8 · PubMed ↗Permalink
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