Evidence map›Paper›PMID 35768664›Full record

SynthesisLung2022

Stage I and II Small-Cell Lung Cancer-New Challenge for Surgery.

Fabian Doerr, Sebastian Stange, Maximilian Michel, Georg Schlachtenberger, Hruy Menghesha, Thorsten Wahlers, Khosro Hekmat, Matthias B Heldwein

Open access · hybridAbstract readMeta-Analysis
In one paragraph

Synthesis in Lung, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 14% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Effect of neoadjuvantTranslational lung cancer research · 2025
    Article
  4. Article
  5. Review
  6. Review
  7. Functional status in patients undergoing lung resection.Archives of medical science : AMS · 2024
    Article
  8. Article
  9. 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

8 authors at 2 institutions in 1 country.

Fabian DoerrDepartment of Cardiothoracic Surgery, University Hospital of Cologne, University of Cologne, Kerpener Straße 62, 50931, Cologne, Germany. fabian.doerr@uk-koeln.de.ORCID 0000-0002-0878-0406
Sebastian StangeDepartment of Thoracic Surgery, Regiomed-Klinikum Coburg GmbH, Coburg, Germany.
Maximilian MichelInstitute of Zoology, Faculty of Mathematics and Natural Sciences, University of Cologne, Cologne, Germany.
Georg SchlachtenbergerDepartment of Cardiothoracic Surgery, University Hospital of Cologne, University of Cologne, Kerpener Straße 62, 50931, Cologne, Germany.
Hruy MengheshaDepartment of Cardiothoracic Surgery, University Hospital of Cologne, University of Cologne, Kerpener Straße 62, 50931, Cologne, Germany.
Thorsten WahlersDepartment of Cardiothoracic Surgery, University Hospital of Cologne, University of Cologne, Kerpener Straße 62, 50931, Cologne, Germany.
Khosro HekmatDepartment of Cardiothoracic Surgery, University Hospital of Cologne, University of Cologne, Kerpener Straße 62, 50931, Cologne, Germany.
Matthias B HeldweinDepartment of Cardiothoracic Surgery, University Hospital of Cologne, University of Cologne, Kerpener Straße 62, 50931, Cologne, Germany.
University of Cologne · DEKlinikum Coburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe recommended treatment for small-cell lung cancer (SCLC) currently is surgery in stage I disease. We wondered about stage II SCLC and present a meta-analysis on mean-survival of patients that underwent surgery for stage I and II compared to controls.

methodsA systematic literature search was performed on December 01st 2021 in Medline, Embase and Cochrane Library. We considered studies published on the effect of surgery in SCLC since 2004 and assessed them using ROBINS-I. We preformed I

resultsOut of 6826 records, seven studies with a total of 11,241 patients ('surgery group': 3911 patients; 'non-surgery group': 7330; treatment period: 1984-2015) were included. Heterogeneity between the studies was revealed in absence of any publication bias. Patient characteristics did not differ between the groups (p-value > 0.05). The mean-survival in an analysis of patients in stage I was 36.7 ± 10.8 months for the 'surgery group' and 20.3 ± 5.7 months for the 'non-surgery group' (p-value = 0.0084). A combined analysis of patients in stage I and II revealed a mean-survival of 32.0 ± 16.7 months for the 'surgery group' and 19.1 ± 6.1 months for the 'non-surgery group' (p-value = 0.0391). In a separate analysis of stage II, we were able to demonstrate a significant survival benefit after surgery (21.4 ± 3.6 versus 16.2 ± 3.9 months; p-value = 0.0493).

conclusionOur meta-analysis shows a significant survival benefit after surgery not only in the recommended stage I but also in stage II SCLC. Our data suggests that both stages should be considered for surgery of early SCLC.

Indexed as

Lung NeoplasmsSmall Cell Lung CarcinomaHumansNeoplasm StagingMean-survivalMeta-analysisSmall-cell lung cancerSurgery

Identifiers

PMID35768664
PMCPMC9360162
OpenAlexW4283741842

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.