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CC BY-NC-ND 4.0 · Endosc Int Open 2024; 12(10): E1092-E1101
DOI: 10.1055/a-2399-7554
Original article

Additional 30-second observation of the right-sided colon for missed polyp detection with linked color imaging compared with narrow band imaging

Hikaru Hashimoto
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Naohisa Yoshida 
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Yoshikazu Inagaki 
2   Gastroenterology, Nishijin Hospital, Kyoto, Japan (Ringgold ID: RIN74145)
,
Kohei Fukumoto
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Daisuke Hasegawa
3   Department of Gastroenterology, Ayabe City Hospital, Kyoto, Japan
,
Kotaro Okuda
4   Department of Gastroenterology, Kyoto Kujo Hospital, Kyoto, Japan
,
Akira Tomie
5   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, United States
,
Ritsu Yasuda
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Yasutaka Morimoto
6   Department of Molecular Gastroenterology and Hepatology, Kyoto Furitsu Ika Daigaku, Kyoto, Japan (Ringgold ID: RIN12898)
,
Takaaki Murakami
5   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, United States
,
Yutaka Inada
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Yuri Tomita 
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Reo Kobayashi
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Ken Inoue
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Ryohei Hirose
1   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Ringgold ID: RIN12898)
,
Osamu Dohi 
7   Department of Gastroenterology, Kyoto Furitsu Ika Daigaku, Kyoto, Japan (Ringgold ID: RIN12898)
,
Yoshito Itoh
5   Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, United States
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Abstract

Background and study aims We previously demonstrated the efficacy of an additional-30-seconds (Add-30s) observation with linked color imaging (LCI) or narrow band imaging (NBI) of the cecum and ascending colon (right-sided colon) after white light imaging (WLI) observation for improving adenoma detection rate (ADR) by 3% to 10%. We herein compared Add-30s LCI with Add-30s NBI in a large number of cases.

Patients and methods We retrospectively collected 1023 and 1011 cases with Add-30s LCI and NBI observation for right-sided colon in 11 affiliated institutions from 2018 to 2022 and propensity score matching was performed. Add-30s observation was as follows. First observation: WLI observation of the right-sided colon as first observation. Second observation: Reobservation of right-sided colon by Add-30s LCI or NBI. The comparison of the mean numbers of adenoma+sessile serrated lesions (SSLs) and adenomas per patient (MASP and MUTYH-associated polyposis) were analyzed in the Add-30s LCI/NBI groups. The increase in right-sided ADR was also analyzed in the groups.

Results Among 748 matched cases in the Add-30s LCI/NBI groups, the MASP and MAP were 0.18/0.19 (P = 0.54) and 0.14/0.15 (P = 0.70). Among experts, they were 0.17/0.22 (P = 0.16) and 0.15/0.21 (P = 0.08). Among non-experts, they were 0.13/0.12 (P = 0.71) and 0.12/0.07 (P = 0.04). The right-sided ADRs of the first+second observations in the LCI and NBI groups were 32.2% and 28.9% (P = 0.16) and the increase of ADRs were 7.5% and 7.2% (P = 0.84).

Conclusions In right-sided colon, the detection of adenoma/SSL did not differ between Add-30s LCI and NBI. Both of them significantly increased ADR.

Keywords

Endoscopy Lower GI Tract - Polyps / adenomas / ... - Diagnosis and imaging (inc chromoendoscopy, NBI, iSCAN, FICE, CLE...)


Publication History

Received: 14 February 2024

Accepted after revision: 21 August 2024

Accepted Manuscript online:
27 August 2024

Article published online:
10 October 2024

© 2024. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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