Magnifying endoscopy with narrow band imaging enhances the diagnostic accuracy of superficial gastric lesions without expertise

Tokuma Tanuma, Masanori Nojima, Haruo Shimizu, Akira Goto, Kentaro Kawakami, Yuya Komatsu, Takafumi Naito, Yasutaka Matsunaga, Reina Oozeki, Noriyuki Akutsu, Masayo Hosokawa, Hiroyuki Okuda, Kentaro Yamashita, Yoshiaki Arimura, Kei Onodera, Kayo Murakami, Mayuko Saito, Yuka Aoki, Yasutaka Sukawa, Tadashi HasegawaYasuhisa Shinomura

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Recent reports suggest that magnifying endoscopy with narrow band imaging (ME-NBI) is useful for the differential diagnosis of superficial gastric lesions. However, interpretation of the image is sometimes difficult even for experts, so it is unknown whether ME-NBI is useful also to endoscopists without expertise in ME-NBI. The aim of this study was to investigate the usefulness of ME-NBI for the novices to distinguish benign from malignant lesions of the stomach. Twenty-four participants, none of whom had expertise in ME-NBI, diagnosed the white light endoscopy (WLE) images of 50 superficial gastric lesions (17 cancers, 33 benign lesions). After presentation of 10 ME-NBI examples (5 cancers, 5 benign lesions), the participants again diagnosed the same 50 lesions with WLE as well as corresponding ME-NBI images. Adding ME-NBI to conventional WLE images significantly improved the diagnostic accuracy of superficial gastric lesions, from 62.8% with WLE to 72.8% with WLE plus ME-NBI (P<0.001). In conclusion, ME-NBI is useful to distinguish superficial lesions of the stomach even for observers without ME-NBI expertise.

Original languageEnglish
Pages (from-to)2917-2926
Number of pages10
JournalGASTROENTEROLOGICAL ENDOSCOPY
Volume52
Issue number10
Publication statusPublished - 2010 Oct

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Gastroenterology

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