Evidence map›Paper›PMID 31781191›Full record

ArticleGastroenterology research and practice2019

Risk of Colorectal Cancer in Ulcerative Colitis Patients: A Systematic Review and Meta-Analysis.

Qing Zhou, Zhao-Feng Shen, Ben-Sheng Wu, Cheng-Biao Xu, Zhong-Qi He, Tuo Chen, Hong-Tao Shang, Chao-Fan Xie, Si-Yi Huang, Yu-Gen Chen and 2 more

Abstract read
In one paragraph

Article in Gastroenterology research and practice, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

49 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Mechanism Through Which Antioxidant Polysaccharide fromMolecules (Basel, Switzerland) · 2026
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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

12 authors.

Qing ZhouAffiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.ORCID https://orcid.org/0000-0002-5432-3652
Zhao-Feng ShenAffiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.
Ben-Sheng WuSuzhou Hospital of Traditional Chinese Medicine, Suzhou, Jiangsu, China.ORCID https://orcid.org/0000-0003-2578-6911
Cheng-Biao XuXuyi Hospital of Traditional Chinese Medicine, Huaian, Jiangsu, China.
Zhong-Qi HeSuzhou Hospital of Traditional Chinese Medicine, Suzhou, Jiangsu, China.ORCID https://orcid.org/0000-0002-1721-0018
Tuo ChenNanjing University of Chinese Medicine, Nanjing, Jiangsu, China.
Hong-Tao ShangAffiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.
Chao-Fan XieShishi General Hospital, Quanzhou, Fujian, China.
Si-Yi HuangThe First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, China.
Yu-Gen ChenAffiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.ORCID https://orcid.org/0000-0001-5251-0588
Hai-Bo ChenNanjing University of Chinese Medicine, Nanjing, Jiangsu, China.ORCID https://orcid.org/0000-0003-3329-2225
Shu-Tang HanAffiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.ORCID https://orcid.org/0000-0002-5522-3987

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundUlcerative colitis (UC) patients have an increased risk for the development of colorectal cancer (CRC). Our aim was to assess the risk of CRC in UC patients compared with disease extent, disease duration, and geographic variation.

methodsIn this systematic review and meta-analysis, we searched PubMed, scientific meetings, and the bibliographies of identified articles, with English language restrictions for studies published from 1988 to 2018, and assessed the risk of CRC in UC patients. Patients with Crohn's disease, family history of CRC, and colorectal adenomatous polyp (CAP) were excluded from this research. The study was registered with PROSPERO, number CRD42018102213.

findingsWe included 58 studies that included 267566 UC patients. Extensive UC and left-sided UC had a higher risk of CRC than proctitis UC. Geography also played a role in UC-associated CRC development. The time of malignant transformation in Asian UC patients started after 10-20 years of this disease duration. North American UC-associated CRC patients significantly increased in more than 30 years of this disease duration.

conclusionIn a systematic review of the literature, we found that disease extent, disease duration, and geography were strong, independent risk factors in UC-associated CRC development.

Identifiers

PMID31781191
PMCPMC6874962

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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.