Evidence map›Paper›PMID 23846368›Full record

ArticleSurgical endoscopy2013

Does conversion affect short-term and oncologic outcomes after laparoscopy for colorectal cancer?

Marco Ettore Allaix, Maurizio Degiuli, Alberto Arezzo, Simone Arolfo, Mario Morino

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Surgical endoscopy, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 9% 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

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  4. [Predictability of anastomotic leaks in visceral surgery].Chirurgie (Heidelberg, Germany) · 2024
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  12. Influence of Conversion and Anastomotic Leakage on Survival in Rectal Cancer Surgery; Retrospective Cross-sectional Study.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2019
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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

5 authors at 1 institution in 1 country.

Marco Ettore AllaixDepartment of Surgical Sciences, University of Turin, Corso A. M. Dogliotti 14, 10126, Turin, Italy, meallaix@gmail.com.
Maurizio Degiuli
Alberto Arezzo
Simone Arolfo
Mario Morino
University of Turin · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundConversion of laparoscopic colorectal resection (LCR) for cancer has been associated with adverse short-term and oncologic outcomes. However, most studies have had small sample sizes and short follow-up periods. This study aimed to evaluate the impact of conversion to open surgery on early postoperative outcomes and survival among patients undergoing LCR for nonmetastatic colorectal cancer.

methodsA prospective database of consecutive LCRs for nonmetastatic colorectal cancer was reviewed. Patients who required conversion (CONV group) were compared with those who had completed laparoscopic resection (LAP group). Only patients with a minimum 5-year follow-up period were included in the oncologic analysis. Kaplan-Meier curves were compared to analyze survival. A multivariate analysis was performed to identify predictors of poor survival.

resultsThe conversion rate was 10.9%. The most common reason for conversion was a locally advanced tumor (48.4%). Conversion was associated with a significantly longer operative time and a greater blood loss. No differences were observed in terms of postoperative morbidity, mortality, or hospital stay between the CONV and LAP patients. During a median follow-up period of 120 months (range, 60-180 months), the CONV group had a significantly worse 5-year overall survival (OS) (79.4 vs 87.4%; p = 0.016) and disease-free survival (DFS) (65.4 vs 79.6%; p = 0.013). Univariate analysis showed that conversion to open surgery, postoperative complications, anastomotic leakage, pT4 cancer, stage 3 disease, and adjuvant chemotherapy were significant risk factors for OS and DFS. On multivariate analysis, pT4 cancer and a lymph node ratio (LNR) of 0.25 or greater were the only independent predictors of DFS and OS, whereas a LNR of 0.01 to 0.24 showed a trend that did not reach statistical significance.

conclusionConversion to open surgery per se is not associated with worse early postoperative outcomes and does not adversely affect long-term survival per se.

Indexed as

LaparoscopyAgedColectomyColorectal NeoplasmsConversion to Open SurgeryDisease-Free SurvivalFemaleHumansIncidenceItalyMaleNeoplasm Recurrence, LocalOperative TimeProspective StudiesSurvival RateTime Factors

Identifiers

PMID23846368
OpenAlexW1988165566

What OpenQuestion holds

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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.