Evidence map›Paper›PMID 26819536›Full record

SynthesisWorld journal of gastroenterology2016

Systematic review of prognostic importance of extramural venous invasion in rectal cancer.

Manish Chand, Muhammed R S Siddiqui, Ian Swift, Gina Brown

Abstract readSystematic Review
In one paragraph

Synthesis in World journal of gastroenterology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
–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

48 citing papers in PubMed.

  1. Trial
  2. Article
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  4. MRI for Rectal Cancer: Updates and Controversies-AJR. American journal of roentgenology · 2025
    Review
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  6. Article
  7. Review
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  9. Review
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  12. Risk Factors for Distant Metastasis in T3 T4 Rectal Cancer.Clinical Medicine Insights. Oncology · 2024
    Article
  13. Article
  14. Article
  15. Article
  16. Article
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  18. Optimizing the Personalized Care for the Management of Rectal Cancer: A Consensus Statement.The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology · 2022
    Article
  19. Article
  20. Article
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

4 authors.

Manish ChandManish Chand, Muhammed RS Siddiqui, Gina Brown, Royal Marsden Hospital, London SM2 5PT, United Kingdom.
Muhammed R S SiddiquiManish Chand, Muhammed RS Siddiqui, Gina Brown, Royal Marsden Hospital, London SM2 5PT, United Kingdom.
Ian SwiftManish Chand, Muhammed RS Siddiqui, Gina Brown, Royal Marsden Hospital, London SM2 5PT, United Kingdom.
Gina BrownManish Chand, Muhammed RS Siddiqui, Gina Brown, Royal Marsden Hospital, London SM2 5PT, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo systematically review the survival outcomes relating to extramural venous invasion in rectal cancer.

methodsA systematic review was conducted using PRISMA guidelines. An electronic search was carried out using MEDLINE, EMBASE, CINAHL, Cochrane library databases, Google scholar and PubMed until October 2014. Search terms were used in combination to yield articles on extramural venous invasion in rectal cancer. Outcome measures included prevalence and 5-year survival rates. These were graphically displayed using Forest plots. Statistical analysis of the data was carried out.

resultsFourteen studies reported the prevalence of extramural venous invasion (EMVI) positive patients. Prevalence ranged from 9%-61%. The pooled prevalence of EMVI positivity was 26% [Random effects: Event rate 0.26 (0.18, 0.36)]. Most studies showed that EMVI related to worse oncological outcomes. The pooled overall survival was 39.5% [Random effects: Event rate 0.395 (0.29, 0.51)].

conclusionHistorically, there has been huge variation in the prevalence of EMVI through inconsistent reporting. However the presence of EMVI clearly leads to worse survival outcomes. As detection rates become more consistent, EMVI may be considered as part of risk-stratification in rectal cancer. Standardised histopathological definitions and the use of magnetic resonance imaging to identify EMVI will improve detection rates in the future.

Indexed as

HumansNeoplasm InvasivenessPredictive Value of TestsPrognosisRectal NeoplasmsRisk FactorsSurvival AnalysisVeinsExtramural venous invasionMagnetic resonance imagingOverall survivalPathologyRectal cancerVascular invasion

Identifiers

PMID26819536
PMCPMC4722002

What OpenQuestion holds

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Registered trials

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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.