Evidence map›Paper›PMID 34671942›Full record

SynthesisAdvances in therapy2021

Selective Mediastinal Lymphadenectomy or Complete Mediastinal Lymphadenectomy for Clinical Stage I Non-Small Cell Lung Cancer: A Meta-Analysis.

Ji Luo, Shize Yang, Siyuan Dong

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Advances in therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

10 citing papers in PubMed, 10 citations in OpenAlex.

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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.

Ji LuoDepartment of Thoracic Surgery, The First Hospital of China Medical University, 155 North Nanjing St, Shenyang, 110001, Liaoning, China.
Shize YangDepartment of Thoracic Surgery, The First Hospital of China Medical University, 155 North Nanjing St, Shenyang, 110001, Liaoning, China.
Siyuan DongDepartment of Thoracic Surgery, The First Hospital of China Medical University, 155 North Nanjing St, Shenyang, 110001, Liaoning, China. sydong@cmu.edu.cn.ORCID 0000-0002-4354-0635
First Hospital of China Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionSelective mediastinal lymphadenectomy (SML) and complete mediastinal lymphadenectomy (CML) are two main types of surgery conducted for the treatment of non-small cell lung cancer (NSCLC) plus lobectomy or segmentectomy. It is not known whether stage I NSCLC can benefit from CML. Using the meta-analytical method, our research aimed to find out the worth of SML and CML for the therapy of clinical stage I NSCLC.

methodsWe searched PubMed, Ovid, MEDLINE, Cochrane Controlled Trial Register (CENTRAL), Embase, and Google Scholar for literature published up to June 2021 to evaluate the comparative research and to assess the post-operative complications, overall survival rate, disease-free survival rate, and local and distant recurrence. This meta-analysis was conducted by combining the results of the reported incidences of post-operative complications, local and distant recurrence, and short- and long-term mortality. The pooled odds ratios (OR) and the 95% confidence intervals were calculated by random or fixed effects models to compare the effectiveness between these two methods.

resultsFive retrospective studies and one randomized controlled trial study were included in our research. The six studies included a total of 5713 patients, of whom 1480 were assigned to the SML group and 4233 were assigned to the CML group. No statistically significant differences were found in the 1- and 5-year overall survival rates or the 1-, 3-, and 5-year disease-free survival rates between the two groups. However, the 3-year overall survival favored the SML group (P < 0.05). There were also no statistically significant differences between the local and distant metastasis. Among the postoperative complications, pneumonia, atelectasis, and prolonged air leak were more common in the CML group (P < 0.05). There were no differences in the prevalence of dysrhythmia, chylothorax, acute respiratory distress syndrome, or recurrent laryngeal nerve injury between the two groups, which may be due to the limited sample size.

conclusionConsidering the comparable survival rates, disease control, and fewer postoperative complications in the evaluated participants, SML is the preferred treatment with less invasiveness for clinical stage I NSCLC.

Indexed as

Carcinoma, Non-Small-Cell LungLung NeoplasmsHumansLymph Node ExcisionNeoplasm Recurrence, LocalNeoplasm StagingRandomized Controlled Trials as TopicRetrospective StudiesClinical stage IComplete mediastinal lymphadenectomyMeta-analysisNon-small cell lung cancerSelective mediastinal lymphadenectomySurvival rate

Identifiers

PMID34671942
OpenAlexW3206050176

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.