Evidence map›Paper›PMID 30468025›Full record

ArticleThoracic cancer2019

Intrapulmonary lymph node metastasis is common in clinically staged IA adenocarcinoma of the lung.

DengGuo Zhang, XianChao Chen, Daxin Zhu, Changlong Qin, Jingsi Dong, Xiaoming Qiu, Mingyu Fan, QingHua Zhuo, XiaoJun Tang

Abstract read
In one paragraph

Article in Thoracic cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–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

13 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. 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

9 authors.

DengGuo ZhangLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
XianChao ChenDepartment of Thoracic Surgery, The Affiliated University Hospital, Southern West Medical University, Luzhou, Sichuan, China.
Daxin ZhuLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Changlong QinLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Jingsi DongLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Xiaoming QiuLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Mingyu FanLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
QingHua ZhuoLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
XiaoJun TangLung Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.ORCID 0000-0001-8757-0927

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIntrapulmonary lymph nodes (LNs, stations 11-14) are usually omitted in postoperative pathological examination. Some non-small cell lung cancer (NSCLC) patients with intrapulmonary LN metastasis are incorrectly diagnosed as N0 cases. Furthermore, underestimation of intrapulmonary LN involvement in clinically early stage NSCLC may lead to the incorrect choice of surgical procedure: lobectomy or sublobar resection. This study was conducted to determine the status of intrapulmonary LN involvement in clinically staged IA (c-T1N0M0) peripheral adenocarcinoma of the lung.

methodsSeventy-five lobectomy specimens of c-T1N0M0 peripheral adenocarcinoma of the lung were carefully dissected to find intrapulmonary LNs. The longest diameter of each intrapulmonary LN was measured and sent for pathological examination, together with hilar and mediastinal LNs, to investigate the relationship between LN metastasis and primary tumor size.

resultsIntrapulmonary LN metastasis was detected in 22.7%(17/75) of patients. Positive LNs were detected in 21.7% (10/46) of T1b patients and 45% (11/24) of T1c patients, while no metastasis (0/5) was observed in T1a patients (P = 0.036). The mean longest diameter of the 17 involved intrapulmonary LNs was only 6.5 ± 2.1 mm, which was not significantly different to the size of negative intrapulmonary LNs (5.2 ± 1.4 mm).

conclusionsIntrapulmonary LN metastasis is common in clinically staged IA peripheral adenocarcinoma of the lung. LN metastasis is related to tumor size, and this should be taken into account to determine appropriate surgical procedures and postoperative treatment. Computed tomography is not a reliable method to judge LN metastasis, particularly intrapulmonary LN metastasis.

Indexed as

Adenocarcinoma of LungAdultAgedAged, 80 and overCarcinoma, Non-Small-Cell LungFemaleFollow-Up StudiesHumansLung NeoplasmsLymphatic MetastasisLymph Node ExcisionMaleMiddle AgedMultimodal ImagingNeoplasm StagingPneumonectomyContrast-enhanced CTintrapulmonary lymph nodelymph node metastasisperipheral adenocarcinoma of the lung

Identifiers

PMID30468025
PMCPMC6360232

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.