Evidence map›Paper›PMID 33532306›Full record

ArticleTranslational andrology and urology2021

Does inflammatory bowel disease increase the risk of lower urinary tract tumors: a meta-analysis.

Chi Zhang, Shengzhuo Liu, Liao Peng, Jiapei Wu, Xiao Zeng, Yiping Lu, Hong Shen, Deyi Luo

Open access · diamondAbstract read
In one paragraph

Article in Translational andrology and urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 5 pooled it
2.6field-weighted citation impact, top 10% 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, 5 syntheses or guidelines pooled it, 15 citations in OpenAlex.

  1. Bladder cancer risk factors: a comprehensive umbrella review of meta-analyses.International journal of surgery (London, England) · 2026
    Pooled it
  2. Saudi consensus guidance for the diagnosis and management of inflammatory bowel disease in children and adolescents.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2025
    Guideline
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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

8 authors at 2 institutions in 1 country.

Chi ZhangDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Shengzhuo LiuDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Liao PengDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Jiapei WuDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Xiao ZengDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Yiping LuDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Hong ShenDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Deyi LuoDepartment of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
Sichuan University · CNWest China Hospital of Sichuan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInflammatory bowel disease, including ulcerative colitis and Crohn's disease, is characterized by chronic inflammation that could be a risk factor for extraintestinal cancer. The aim of this study is to evaluate whether inflammatory bowel disease is related to the risk of lower urinary tract tumors.

methodsA systematical research was performed on various medical databases including PubMed, the Cochrane Library, Embase and Web of Science from inception to April 2020. Data were independently extracted by two reviewers. The Newcastle-Ottawa Scale and the Oxford Centre for Evidence-Based Medicine criteria were used to assess the quality of included articles. The analysis was completed by STATA version 14.2.

resultsSix hundred and twelve of records were initially identified and 16 studies were included in the final analysis. In general, inflammatory bowel disease patients were not at increased risk of prostate cancer, bladder cancer and male genital cancer. In the subgroup analysis, Crohn's disease patients seemed to have borderline increased risk of prostate cancer [standardized incidence ratio: 1.05; 95% confidence interval (CI): 0.90-1.21; I

conclusionsInflammatory bowel disease did not significantly increase the risk of prostate cancer, bladder cancer and male genital cancer. Crohn's disease patients seemed to have a higher risk of prostate cancer and bladder cancer, and ulcerative colitis patients seemed to have a higher risk of prostate cancer. ulcerative colitis patients in East Asian countries have significantly increased prostate cancer risk.

Indexed as

bladder cancer (BCa)Crohn’s diseaseInflammatory bowel disease (IBD)male genital cancer (MGCa)prostate cancer (PCa)

Identifiers

PMID33532306
PMCPMC7844520
OpenAlexW3111452541

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.