Evidence map›Paper›PMID 22723875›Full record

ArticlePloS one2012

Effect of lymph node number on survival of patients with lymph node-negative gastric cancer according to the 7th edition UICC TNM system.

Dazhi Xu, Ying Huang, Qirong Geng, Yuanxiang Guan, Yuanfang Li, Wei Wang, Shuqiang Yuan, Xiaowei Sun, Yingbo Chen, Wei Li and 2 more

Abstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

33 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Survival after Gastrectomy in Node-Negative Gastric Cancer: A Review and Meta-Analysis of Prognostic Factors.Medical science monitor : international medical journal of experimental and clinical research · 2015
    Pooled it
  2. Carnoy's solution increases the number of examined lymph nodes following gastrectomy for adenocarcinoma: a randomized trial.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2016
    Trial
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  20. Clinical significance of lymphadenectomy in patients with gastric cancer.World journal of gastrointestinal oncology · 2016
    Review
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

12 authors.

Dazhi XuState Key Laboratory of Oncology in South China, Guangzhou, China. xudzh@sysucc.org.cn
Ying Huang
Qirong Geng
Yuanxiang Guan
Yuanfang Li
Wei Wang
Shuqiang Yuan
Xiaowei Sun
Yingbo Chen
Wei Li
Zhiwei Zhou
Youqing Zhan

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFor the patients with node-negative gastric cancer, the 7th edition classification does not define the minimum number of lymph nodes necessary. We aimed to explore the prognostic significance of examined lymph nodes and determine how many nodes must be examined. METHODOLOGY/PRINCIPAL

findings435 patients underwent D2 gastrectomy with node-negative gastric cancer between December 1992 and December 2006 were obtained. Patients were classified into 4 groups by the number of negative LNs examined during surgery (1-6LNs, 7-10 LNs, 11-15 LNs, and > = 16 LNs). Stratified and Cox regression analyses were used to evaluate the association between survival and the number of negative LNs. Survival was significantly better in the > = 16 LNs, compared with the 1-5 LNs, 6-10 LNs and 11-15 LNs group in T2-4 patients; Multivariate analysis demonstrated tumor size, depth of invasion, 7th UICC stage and the number of examined nodes are strongly independent predictors of survival.

conclusionsThis study first demonstrates that patients with lymph node-negative gastric cancer underwent D2 dissection should have at least 16 LNs examined, especially in advanced gastric cancer. These results are a reasonable supplement to our previous tumor-ratio-metastasis staging system and a stratification criterion in clinical practice.

Indexed as

AdolescentAdultAgedAged, 80 and overFemaleHumansLymphatic MetastasisLymph NodesMaleMiddle AgedNeoplasm StagingPrognosisStomach NeoplasmsYoung Adult

Identifiers

PMID22723875
PMCPMC3378541

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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.