Evidence map›Paper›PMID 28432461›Full record

SynthesisSurgical endoscopy2017

Laparoscopic surgery for T4 colon cancer: a systematic review and meta-analysis.

Charlotte E L Klaver, Tijmen M Kappen, Wernard A A Borstlap, Willem A Bemelman, Pieter J Tanis

Registry-linked trialOpen access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Surgical endoscopy, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04646772 (Surgery for Locally Advanced Colon Cancer), which is not on this map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 6% 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.

NCT04646772 unknown statusnot on this mapstarted 2021, after this paper: background citation

Surgery for Locally Advanced Colon Cancer: is it Worth it? A Multicenter Retrospective Analysis. (LACC Trial)

TypeobservationalSponsorSanto Spirito Hospital, ItalyRan2021 to 2021Enrolled100ConditionsMalignant Neoplasm of Large Intestine TNM Staging Primary Tumor (T) T4ArmsMultivisceral resection
3 · Its place in the literature

Who cites it

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 104 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
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  5. Article
  6. Article
  7. Article
  8. Perioperative and oncological outcomes following robotic en bloc multivisceral resection for colorectal cancer.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2024
    Article
  9. Article
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  11. Article
  12. Article
  13. Review
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  15. Article
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  17. Review
  18. Effect of miR-488 on Colon Cancer Biology and Clinical Applications.Evidence-based complementary and alternative medicine : eCAM · 2022
    Article
  19. Minimally invasive surgeryWorld journal of clinical cases · 2021
    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

5 authors at 1 institution in 1 country.

Charlotte E L KlaverDepartment of Surgery, Academic Medical Centre, University of Amsterdam, Room G4140, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands. c.e.klaver@amc.nl.
Tijmen M KappenDepartment of Surgery, Academic Medical Centre, University of Amsterdam, Room G4140, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands.
Wernard A A BorstlapDepartment of Surgery, Academic Medical Centre, University of Amsterdam, Room G4140, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands.
Willem A BemelmanDepartment of Surgery, Academic Medical Centre, University of Amsterdam, Room G4140, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands.
Pieter J TanisDepartment of Surgery, Academic Medical Centre, University of Amsterdam, Room G4140, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands.
University of Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn colon cancer, T4 stage is still assumed to be a relative contraindication for laparoscopic surgery considering the oncological safety. The aim of this systematic review with meta-analysis was to evaluate short- and long-term oncological outcomes after laparoscopic surgery for T4 colon cancer, and to compare these with open surgery.

methodsUsing systematic review of literature, studies reporting on radicality of resection, disease-free survival (DFS), and/or overall survival (OS) after laparoscopic surgery for T4 colon cancer were identified, with or without a control group of open surgery. Pooled proportions and risk ratios were calculated using an inverse variance method.

resultsThirteen observational cohort studies published between 2012 and 2017 were included, together consisting of 1217 patients that received laparoscopic surgery and 1357 with an open procedure. The proportion of multivisceral resections was larger in the open group in five studies. Based on 11 studies, the pooled proportion of R0 resection was 0.96 (95% CI: 0.91-0.99) and 0.96 (95% CI: 0.90-0.98) after laparoscopic and open surgery, respectively. Analysing (mainly) T4a subgroups in 6 evaluable studies revealed pooled R0 resection rates of 0.94 in both groups. No significant differences were found between laparoscopic and open surgery for any survival measure: RR 1.07 (95% CI: 0.96-1.20) for 3-year DFS, RR 1.04 (95% CI: 0.95-1.15) for 5-year DFS, RR 1.07 (95% CI: 0.99-1.14) for 3-year OS, and RR 1.05 (95% CI: 0.98-1.12) for 5-year OS.

conclusionLiterature on laparoscopic surgery for T4 colon cancer is restricted to non-randomized comparisons with substantial allocation bias. Laparoscopic surgery for T4a tumours might be safe, whereas for T4b colon cancer requiring multivisceral resection it should be applied with caution.

Indexed as

LaparoscopyColectomyColonic NeoplasmsHumansNeoplasm StagingTreatment OutcomeLocally advanced colon cancerMinimally invasive surgery

Identifiers

PMID28432461
PMCPMC5715041
OpenAlexW2605654218

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.