Evidence map›Paper›PMID 33747522›Full record

ArticleGastroenterology report2021

Chromoendoscopy with targeted biopsies is superior to white-light endoscopy for the long-term follow-up detection of dysplasia in ulcerative colitis patients: a multicenter randomized-controlled trial.

Jian Wan, Qin Zhang, Shu-Hui Liang, Jie Zhong, Jing-Nan Li, Zhi-Hua Ran, Fa-Chao Zhi, Xiao-Di Wang, Xiao-Lan Zhang, Zhong-Hui Wen and 4 more

Open access · diamondAbstract read
In one paragraph

Article in Gastroenterology report, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.2field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. New Technologies for IBD Endoscopy.Journal of clinical medicine · 2026
    Review
  4. Advances in endoscopic dysplasia detection in inflammatory bowel disease.World journal of gastrointestinal endoscopy · 2025
    Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 10 institutions in 1 country.

Jian WanState Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China.ORCID https://orcid.org/0000-0001-9941-0576
Qin ZhangState Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China.
Shu-Hui LiangState Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China.
Jie ZhongDepartment of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
Jing-Nan LiDepartment of Gastroenterology, Peking Union Medical College Hospital, Beijing, P. R. China.
Zhi-Hua RanDivision of Gastroenterology and Hepatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
Fa-Chao ZhiDepartment of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P. R. China.
Xiao-Di WangDepartment of Gastroenterology, China-Japan Friendship Hospital, Beijing, P. R. China.
Xiao-Lan ZhangDepartment of Gastroenterology, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P. R. China.
Zhong-Hui WenDepartment of Gastroenterology, West China Hospital, Sichuan University, Chengdu, Sichuan, P. R. China.
Jian-Qiu ShengDepartment of Gastroenterology, PLA Army General Hospital, Beijing, P. R. China.
Hua-Xiu ShiDepartment of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen University Institute of Digestive Disease, Xiamen, Fujian, P. R. China.
Qiao MeiDepartment of Gastroenterology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, P. R. China.
Kai-Chun WuState Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China.
National Clinical Research Center for Digestive Diseases · CNShanghai Jiao Tong University · CNAnhui Medical University · CNChina-Japan Friendship Hospital · CNChinese Academy of Medical Sciences & Peking Union Medical College · CNHebei Medical University · CNNanfang Hospital · CNSichuan University · CNThe Military General Hospital of Beijing PLA · CNZhongshan Hospital of Xiamen University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundData from single-center experience or small sample-sized studies have shown that chromoendoscopy (CE) might be superior to white-light endoscopy (WLE) for dysplasia surveillance in ulcerative colitis (UC) patients. We performed a prospective randomized trial with a long-term follow-up to compare the detection rate of dysplasia among WLE with targeted biopsies (WLT), WLE with random biopsies (WLR), and dye-based CE with targeted biopsies (CET) in UC patients.

methodsPatients with long-standing UC were enrolled from 11 medical centers from March 2012 to December 2013 and randomized into three arms (WLT, WLR, and CET). Only high-definition endoscopy was used in all three groups. The patients were followed up by annual endoscopy with biopsies through December 2017.

resultsWith a median follow-up time of 55 months, a total of 122 patients with 447 colonoscopies were finally analysed in the per-protocol set: WLT (

conclusionsFor a better outcome of cancer/dysplasia surveillance in patients with long-standing UC, CET appeared to be more effective than WLT and less tedious than WLR. CET was found to be particularly useful when a long-term (>3 years) follow-up was conducted for dysplasia surveillance. The trial was registered on www.chictr.org.cn (ChiCTR1900023689).

Indexed as

chromoendoscopydysplasiaulcerative colitiswhite-light endoscopy

Identifiers

PMID33747522
PMCPMC7962735
OpenAlexW3089230215

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.