Vol 47: Observer Variability in Gastric Neoplasm Assessment Using the Vessel Plus Surface Classification for Magnifying Endoscopy with Narrow Band Imaging.Report as inadecuate



 Vol 47: Observer Variability in Gastric Neoplasm Assessment Using the Vessel Plus Surface Classification for Magnifying Endoscopy with Narrow Band Imaging.


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This article is from Clinical Endoscopy, volume 47.AbstractBackground-Aims: Recent studies have demonstrated that magnifying endoscopy with narrow band imaging ME-NBI facilitates differentiation of early gastric cancer from gastric adenoma using vessel plus surface VS classification. This study estimated the interobserver and intraobserver agreement of endoscopists using the Yao VS classification system for the gastric mucosal surface. Methods: We retrospectively reviewed patients who underwent endoscopic submucosal dissection or endoscopic mucosal resection, and selected cases in which preoperative ME-NBI was conducted. Before testing endoscopists, a 20-minute training module was given. Static ME-NBI images n=47 cases were presented to seven endoscopists two experts and five trainees who were asked to assess the images in 20 seconds using the Yao VS classification system. After 2 weeks, the endoscopists were asked to analyze the images again. The κ statistic was calculated for intraobserver and interobserver variability. Results: The mean κ for intraobserver agreement was 0.69 experts, 0.74; trainees, 0.64. The mean κ for interobserver agreement was 0.42 experts, 0.49; trainees, 0.40. Conclusions: We obtained reliable results as assessed by observer variability, with only brief training on VS classification. The VS classification appears to provide an objective assessment of ME-NBI for trainees who are not familiar with ME-NBI.



Author: Yoo, Chan Hui; Park, Moo In; Park, Seun Ja; Moon, Won; Kim, Hyung Hun; Song, Jun Young; Kim, Do Hyun

Source: https://archive.org/







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