Feasibility of a simplified narrow-band imaging classification system for Barrett’s esophagus for novice endoscopists

Background Narrow-band imaging (NBI) classifications for Barrett’s esophagus have been proposed for the detection of early esophageal adenocarcinoma. We developed a simplified classification system with demonstrated high diagnostic accuracy and reproducibility among experienced endoscopists, but the...

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Bibliographic Details
Published in:Journal of gastroenterology 2019-07, Vol.54 (7), p.587-596
Main Authors: Furuhashi, Hiroto, Goda, Kenichi, Shimizu, Yuichi, Kato, Masayuki, Takahashi, Masakazu, Dobashi, Akira, Hirata, Koji, Oba, Ayane, Shigesawa, Taku, Inoue, Masaki, Matsui, Hiroaki, Kinoshita, Chika, Ando, Yoshitaka, Ikegami, Masahiro, Shimoda, Tadakazu, Kato, Mototsugu
Format: Article
Language:English
Subjects:
Abdominal Surgery
Accuracy
Adenocarcinoma
Classification
Colorectal Surgery
Diagnosis
Dysplasia
Endoscopy
Esophageal cancer
Esophagus
Gastroenterology
Hepatology
Medical colleges
Medicine
Medicine & Public Health
Mucosa
Original Article—Alimentary Tract
Surgical Oncology
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Summary:Background Narrow-band imaging (NBI) classifications for Barrett’s esophagus have been proposed for the detection of early esophageal adenocarcinoma. We developed a simplified classification system with demonstrated high diagnostic accuracy and reproducibility among experienced endoscopists, but the feasibility of this system among novice endoscopists was unclear. Methods In the present study, eight novice endoscopists with no experience of magnification endoscopy were asked to review 248 images of Barrett’s esophagus (72 dysplastic, 176 non-dysplastic) obtained using high-definition magnification endoscopy with NBI 6 weeks before (1st test), immediately after (2nd test), and 6 weeks after (3rd test) being taught the simplified classification system. The primary outcomes were differences in diagnostic accuracy for dysplasia among the three tests. Results The specificity and overall accuracy improved significantly in the 2nd vs. 1st test [97% vs. 80% ( p 
ISSN:0944-1174
1435-5922
DOI:10.1007/s00535-018-01537-7