胃病変の鑑別診断におけるNarrow Band Imaging（NBI）併用拡大観察の有用性─NBI初学者における検討─

田沼 徳真; 野島 正寛; 清水 晴夫; 後藤 啓; 川上 賢太郎; 小松 悠弥; 内藤 崇史; 松永 康孝; 大関 令奈; 阿久津 典之; 細川 雅代; 奥田 博介; 山下 健太郎; 有村 佳昭; 小野寺 馨; 村上 佳世; 斉藤 真由子; 青木 由佳; 須河 恭敬; 長谷川 匡; 篠村 恭久

doi:10.11280/gee.52.2917

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 HASEGAWA, Yasuhisa SHINOMURA

Author information

Tokuma TANUMA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Masanori NOJIMA
Department of Public Health, Sapporo Medical University, Sapporo, Japan.
Haruo SHIMIZU
Department of Gastroenterology, Muroran City General Hospital, Muroran, Japan.
Akira GOTO
Department of Gastroenterology, Kushiro City General Hospital, Kushiro, Japan.
Kentaro KAWAKAMI
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Yuya KOMATSU
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Takafumi NAITO
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Yasutaka MATSUNAGA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Reina OOZEKI
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Noriyuki AKUTSU
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Masayo HOSOKAWA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Hiroyuki OKUDA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Kentaro YAMASHITA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Yoshiaki ARIMURA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Kei ONODERA
Department of Gastroenterology, Muroran City General Hospital, Muroran, Japan.
Kayo MURAKAMI
Department of Gastroenterology, Muroran City General Hospital, Muroran, Japan.
Mayuko SAITO
Department of Gastroenterology, Muroran City General Hospital, Muroran, Japan.
Yuka AOKI
Department of Gastroenterology, Kushiro City General Hospital, Kushiro, Japan.
Yasutaka SUKAWA
Department of Gastroenterology, Kushiro City General Hospital, Kushiro, Japan.
Tadashi HASEGAWA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Yasuhisa SHINOMURA
First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Author's Organization：
Departmene of Surgical Pathology, Sapporo Medical University, Sapporo, Japan.

JOURNAL FREE ACCESS

2010 Volume 52 Issue 10 Pages 2917-2926

DOI https://doi.org/10.11280/gee.52.2917

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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.

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