Evidence map›Paper›PMID 34716475›Full record

SynthesisInternational journal of colorectal disease2022

Prior endoscopic resection does not affect the outcome of secondary surgery for T1 colorectal cancer, a systematic review and meta-analysis.

Jianhua Nian, Liang Tao, Weiguang Zhou

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in International journal of colorectal disease, 2022. 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
0.9field-weighted citation impact, top 22% 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, 14 citations in OpenAlex.

  1. Competing Mortality Redefines the Net Benefit of Additional Surgery After Endoscopic Resection for T1 Colorectal Cancer in Older Adults.Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society · 2026
    Review
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  3. Endoscopic mesorectal dissection for precise rectal cancer staging: trespassing the boundaries of lumenal rectal interventions.VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy · 2025
    Article
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  8. Review
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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

3 authors at 1 institution in 1 country.

Jianhua NianDepartment of General Surgery, Central Hospital of Haining, Zhejiang Province People's Hospital Haining Hospital, No.758 Chang'an Road, Chang'an Town, Haining, 314408, Zhejiang, China.
Liang TaoDepartment of General Surgery, Central Hospital of Haining, Zhejiang Province People's Hospital Haining Hospital, No.758 Chang'an Road, Chang'an Town, Haining, 314408, Zhejiang, China.
Weiguang ZhouDepartment of General Surgery, Central Hospital of Haining, Zhejiang Province People's Hospital Haining Hospital, No.758 Chang'an Road, Chang'an Town, Haining, 314408, Zhejiang, China. zhouwei.guang@163.com.
First People's Hospital of Nanning · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt remains unclear the effect of prior endoscopic resection (ER) on the secondary surgery (SS) for T1 colorectal cancer (CRC). This study aimed to compare the short- and long-term outcomes between primary surgery (PS) and ER followed by SS for T1 CRC.

methodsA systematic literature search was performed in PubMed and Ovid for studies comparing PS with ER followed by SS for T1 colorectal cancer. The last search was performed on 18 May 2021. The primary outcomes were surgical parameters and the secondary outcomes were survival indicators. The meta-analysis was performed with Review Manager Software (version 5.3).

resultsA total of fifteen studies published between 2013 and 2021 with 4349 patients were included in this meta-analysis finally. No significant difference was observed between the two groups for operative time (P = 0.75, WMD = 3.16, 95%CI [-15.88, 22.19], I

conclusionER followed by SS is feasible for T1 CRC with high-risk factors. The prior ER would not bring additional adverse effects to the SS. More advanced tools should be developed to improve the diagnostic accuracy for the high-risk factors before treatment for T1 CRC.

Indexed as

Colorectal NeoplasmsEndoscopyHumansNeoplasm Recurrence, LocalPropensity ScoreRisk FactorsTreatment OutcomeColorectal cancerEndoscopic resectionMeta-analysisPrimary surgeryT1 stage

Identifiers

PMID34716475
OpenAlexW3210816237

What OpenQuestion holds

Textmetadata
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.