Chromoendoscopy, Narrow-Band Imaging or White Light Endoscopy for Neoplasia Detection in Inflammatory Bowel Diseases

Ofir Har-Noy*, Lior Katz, Tomer Avni, Robert Battat, Talat Bessissow, Diana E. Yung, Tal Engel, Anastasios Koulaouzidis, Rami Eliakim, Shomron Ben-Horin, Uri Kopylov

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Background: Studies have confirmed an increased risk of colorectal cancer in patients with ulcerative colitis; hence, surveillance is recommended. Optional modalities include white light endoscopy (WLE) or dye-spray chromoendoscopy. However, narrow-band imaging (NBI) is still not considered comparable to chromoendoscopy. Aim: The aim of this study was to compare the diagnostic yield (DY) of WLE, chromoendoscopy, NBI for detection of neoplasia in patients with inflammatory bowel disease (IBD) by performing a meta-analysis of the existing literature. Methods: We searched databases for prospective studies. For each modality, we performed comparative per-lesion analysis (any neoplasia detection) and per-patient analysis (patient with neoplastic lesions). Meta-analysis was performed using fixed-effect model unless heterogeneity was high. Odds ratios (ORs) with 95% CIs were calculated and pooled. Results: Five studies compared chromoendoscopy to WLE. Chromoendoscopy (n = 361) was superior to WLE (n = 358) with per-patient analysis OR 2.05 (95% CI 1.26, 3.35) and per-lesion analysis OR 2.79 (95% CI 2.08, 3.73). High-definition (HD) chromoendoscopy was superior to HD-WLE with per-lesion analysis OR 2.48 (95% CI 1.55, 3.97). In four studies comparing NBI to WLE (n = 305), no difference was found in per-patient analysis OR 0.97 (95% CI 0.62, 1.53) and per-lesion analysis OR 0.94 (95% CI 0.63, 1.4). In two studies comparing CE to NBI (n = 104), no difference was found in per-patient analysis OR 1.0 (95% CI 0.51, 1.95) and per-lesion analysis OR 1.29 (95% CI 0.69, 2.41). Conclusion: Chromoendoscopy is superior to WLE for detection of dysplasia in IBD, even with HD endoscopy. No difference in DY could be demonstrated for NBI in comparison with other modalities.

Original languageEnglish
Pages (from-to)2982-2990
Number of pages9
JournalDigestive Diseases and Sciences
Volume62
Issue number11
DOIs
StatePublished - 1 Nov 2017

Keywords

  • Chromoendoscopy
  • Diagnostic tests
  • Inflammatory bowel disease
  • Meta-analyses
  • Ulcerative colitis

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