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CC BY-NC-ND 4.0 · Endosc Int Open 2023; 11(05): E504-E512
DOI: 10.1055/a-2067-8943
Original article

A new endoscopic scoring system corresponding to histological healing using linked color imaging in ulcerative colitis: the SOUL study

Daisuke Saito
 1   Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Tokyo, Japan
,
Fumihito Hirai
 2   Department of Gastroenterology and Medicine, Fukuoka University Faculty of Medicine, Fukuoka, Japan
,
Kazuhiko Uchiyama
 3   Department of Gastroenterology and Hepatology, Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
,
Tomohisa Takagi
 3   Department of Gastroenterology and Hepatology, Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
,
Yuji Naito
 4   Department of Human Immunology and Nutrition Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
,
Noritaka Takatsu
 5   Inflammatory bowel disease center, Fukuoka University Chikushi Hospital, Fukuoka, Japan
,
Hiroshi Tanabe
 6   Department of Pathology, Fukuoka University Chikushi Hospital, Fukuoka, Japan
,
Mitsuo Kishimoto
 7   Department of Surgical Pathology, Kyoto City Hospital, Kyoto, Japan
,
Minoru Matsuura
 1   Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Tokyo, Japan
,
Jun Miyoshi
 1   Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Tokyo, Japan
,
Kenji Watanabe
 8   Center for Inflammatory Bowel Disease, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Hyogo Medical University, Hyogo, Japan
,
Motohiro Esaki
 9   Department of Gastroenterology and Hepatology, Saga University, Saga, Japan
,
Makoto Naganuma
10   Department of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan
,
Tadakazu Hisamatsu
 1   Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Tokyo, Japan
› Author Affiliations TRIAL REGISTRATION: Prospective, Multi-Center Study UMIN000030412 at UMIN Japan
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Abstract

Background and study aims An important therapeutic aim in ulcerative colitis (UC) is endoscopic remission. Although an endoscopic score with white light imaging (WLI) is mainly used to evaluate endoscopic findings, the usefulness of linked color imaging (LCI) has been reported. We evaluated the relationship between LCI and histopathological findings and attempted to establish a new LCI endoscopic evaluation index for UC.

Patients and methods This study was conducted at Kyorin University, Kyoto Prefectural University, and Fukuoka University Chikushi Hospital. Ninety-two patients with a Mayo endoscopic subscore (MES) ≤ 1 who underwent colonoscopy for UC in clinical remission were included. LCI index was defined as redness (R) (Grade 0–2), area of inflammation (A) (Grade 0–3), and lymphoid follicles (L) (Grade 0–3). Histological healing was defined as Geboes score < 2B.1. Endoscopic and histopathological scores were determined by central judgment.

Results In 92 patients, 85 biopsies from the sigmoid colon and 84 biopsies from the rectum (total 169 biopsies) were evaluated. There were 22, 117, and 30 cases of Grades 0, 1, and 2, respectively in LCI index-R; 113, 34, 17, and five cases of Grades 0, 1, 2, and 3, respectively, in LCI index-A; and 124, 27, 14, and four cases of Grades 0, 1, 2, and 3, respectively, in LCI index-L. Histological healing was achieved in 84.0 % of the cases (142 of 169), and there were significant associations with histological healing or non-healing in LCI index-R (P = 0.013) and A (P = 0.0014).

Conclusions A new LCI index is useful for predicting histological healing in UC patients with MES ≤ 1 and clinical remission.



Publication History

Received: 05 October 2022

Accepted after revision: 29 March 2023

Accepted Manuscript online:
03 April 2023

Article published online:
17 May 2023

© 2023. 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/)

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