Evidence map›Paper›PMID 33629518›Full record

ArticleThoracic cancer2021

Preoperative consolidation-to-tumor ratio is effective in the prediction of lymph node metastasis in patients with pulmonary ground-glass component nodules.

Yi-Chung Chen, Yi-Han Lin, Hung-Che Chien, Po-Kuei Hsu, Jung-Jyh Hung, Chien-Sheng Huang, Chih-Cheng Hsieh, Wen-Hu Hsu, Han-Shui Hsu

Open access · goldAbstract read
In one paragraph

Article in Thoracic cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.9field-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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 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

9 authors at 3 institutions in 1 country.

Yi-Chung ChenDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.ORCID 0000-0002-7303-280X
Yi-Han LinDivision of Thoracic Surgery, Department of Surgery, Min-Sheng General Hospital, Taoyuan, Taiwan.
Hung-Che ChienDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.
Po-Kuei HsuDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.
Jung-Jyh HungDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.ORCID 0000-0001-6597-3645
Chien-Sheng HuangDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.ORCID 0000-0002-3206-2869
Chih-Cheng HsiehDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.
Wen-Hu HsuDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.
Han-Shui HsuDivision of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.
Taipei Veterans General Hospital · TWNational Yang Ming Chiao Tung University · TWMin Sheng General Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPreoperative positron emission tomography/computed tomography (PET/CT) is recommended as a guideline for staging of lung cancer. However, for patients with pulmonary ground-glass opacity (GGO) nodules who are supposed to have a relatively low risk of incidence of lymphatic metastasis, it remains uncertain whether PET/CT is more effective than consolidation-to-tumor ratio (CTR) in the prediction of regional lymphatic metastasis.

methodsThe data on patients who underwent surgery for lung cancer from 2011 to 2016 were collected retrospectively, which included CTR, results of PET/CT, and pathological characteristics. The patients who had undergone preoperative PET/CT were identified to find the risk factors for lymphatic metastasis. A receiver operating characteristic (ROC) curve and multiple logistic regression was utilized to clarify the predictive value of CTR and main tumor maximal standardized uptake value (SUVmax).

resultsAmong 217 patients who had PET/CT before lobectomy, chest computed tomography revealed that 75 patients had CTR greater than 62%. The patients with lymphatic metastasis were shown to have higher CTR and higher main tumor SUVmax. Multiple logistic regression showed that younger age (<60 years), higher main tumor SUVmax on PET/CT, and greater CTR were independent predictive factors for lymphatic metastasis. The area under the ROC curve was comparable, 0.817 for CTR, and 0.816 for main tumor SUVmax.

conclusionsThe present study revealed that CTR was not inferior to main tumor SUVmax considering the predictive power for lymphatic metastasis preoperatively in lung cancer patients with a GGO component. PET/CT might not be necessary preoperatively in selected patients.

Indexed as

FemaleHumansLung NeoplasmsMaleMiddle AgedMultiple Pulmonary NodulesPreoperative Periodconsolidation-to-tumor ratioground-glass opacitylung cancerpositron emission tomography/computed tomography

Identifiers

PMID33629518
PMCPMC8046132
OpenAlexW3132749387

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.