Evidence map›Paper›PMID 28576593›Full record

ArticleClinical lung cancer2017

Impact of Omission of Intrapulmonary Lymph Node Retrieval on Outcome Evaluation of Lung Cancer Patients Without Lymph Node Metastasis: A Propensity Score Matching Analysis.

Xing Wang, Shi Yan, Chao Lv, Yuzhao Wang, Jia Wang, Shaolei Li, Lijian Zhang, Yue Yang, Nan Wu

Abstract read
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In one paragraph

Article in Clinical lung cancer, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Xing WangKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Shi YanKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Chao LvKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Yuzhao WangKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Jia WangKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Shaolei LiKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Lijian ZhangKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Yue YangKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China.
Nan WuKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Beijing, China. Electronic address: nanwu@bjmu.edu.cn.
Peking University Cancer Hospital · CNPeking University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionClinical practice of retrieval of segmental (station 13) and subsegmental (station 14) lymph nodes for pathologic examination varies during lung cancer surgery. This study aimed to evaluate whether omitting retrieval of nodes from stations 13 and 14 could affect outcome evaluation for patients with pN0 non-small-cell lung cancer (NSCLC).

methodsThis retrospective study analyzed 442 patients with NSCLC who were treated with both R0 resection and systematic mediastinal lymphadenectomy with pathologically confirmed stage pN0 NSCLC. The study group included patients in whom N1 nodes including stations 10 to 14 were investigated, and the control group included patients in whom stations 10 to 12 only were investigated. Clinical and pathologic parameters of the groups were balanced by propensity score matching, and oncologic outcomes were assessed by the log-rank test.

resultsA total of 435 cases were included in the final analysis (170 in the study group and 265 in the control group). In the study group, a mean ± SD of 5.0 ± 3.0 nodes per case were collected from nodes 13 and 14. After propensity score matching, 143 cases were included in each group. Overall and disease-free survival improved in the study group compared to the control group (P = .027 and P = .021, respectively). T staging and intrapulmonary node collection were prognostic factors for pN0 cases.

conclusionInferior oncologic outcomes of pN0 cases without intrapulmonary node retrieval suggest that the procedure of intrapulmonary lymph node retrieval may play a role in outcome evaluation for pN0 NSCLC patients.

Indexed as

AgedCarcinoma, Non-Small-Cell LungDisease-Free SurvivalFemaleFollow-Up StudiesHumansLung NeoplasmsLymphatic MetastasisLymph Node ExcisionLymph NodesMaleMiddle AgedNeoplasm StagingPrognosisPropensity ScoreRetrospective StudiesLymph nodeNSCLCPathologic stagingPrognosisSegmentalSubsegmental

Identifiers

PMID28576593
OpenAlexW2613303449

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.