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ArticleThorax2025

Diameter thresholds for pure ground-glass pulmonary nodules at low-dose CT screening: Chinese experience.

Wenjun Ye, Wenhai Fu, Caichen Li, Jianfu Li, Shan Xiong, Bo Cheng, Bin Xu, Qixia Wang, Yi Feng, Peiling Chen and 2 more

Registry-linked trialAbstract read
In one paragraph

Article in Thorax, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04938804 (Non-risk Based Lung Cancer Screening With One-time Low-dose Computed Tomography), which is not on this map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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.

NCT04938804 narecruitingnot on this map

Non-risk Based Lung Cancer Screening With One-time Low-dose Computed Tomography: a Prospective Cohort Study

TypeinterventionalSponsorThe First Affiliated Hospital of Guangzhou Medical UniversityRan2015 to 2026Enrolled11,000ConditionsLung CancerArmsLow-dose computed tomography
3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

  1. Review
  2. Article
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  6. 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

12 authors.

Wenjun Ye *Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.ORCID 0009-0000-8182-5634
Wenhai Fu *Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.
Caichen Li *Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.
Jianfu LiDepartment of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.
Shan XiongDepartment of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.
Bo ChengDepartment of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.
Bin XuGuangzhou Jiubang Shanxin Clinic Ltd, Guangzhou, Guangdong, China.
Qixia WangDepartment of Interventional Pulmonology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
Yi FengDepartment of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.ORCID 0000-0001-7998-656X
Peiling ChenDepartment of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China.ORCID 0000-0003-0636-3032
Jianxing HeDepartment of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China drjianxing.he@gmail.com liangwh1987@163.com.ORCID 0000-0003-1737-8192
Wenhua LiangDepartment of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou, China drjianxing.he@gmail.com liangwh1987@163.com.ORCID 0000-0002-1391-8238

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLimited research exists on screening thresholds for low-dose CT in detecting malignant pure ground-glass lung nodules (pGGNs) in the Chinese population. MATERIALS AND

methodsA retrospective analysis of the Guangzhou Lung-Care programme was conducted, retrieving average transverse diameter, location, histopathology, frequency and follow-up intervals. Diagnostic performances for 'lung cancers' were evaluated using areas under the curve (AUCs), decision curve analysis (DCA), sensitivities and specificities, with thresholds ranging from 5 mm to 10 mm. We divide malignant pGGNs into three groups: (1) minimally invasive adenocarcinoma (MIA) and invasive adenocarcinoma (IA), (2) atypical adenomatous hyperplasia (AAH) and adenocarcinoma in situ (AIS) and MIA and IA and (3) IA-only.

resultsIn 'MIA+IA', increasing the threshold from 5 mm to 8 mm improved specificity (60.97% to 88.85%, p<0.001) and positive predictive values (PPVs; 5.87% to 14.88%, p<0.001), but decreased sensitivity (94.44% to 75.56%, p<0.001). Further raising threshold from 8 mm reduced sensitivity (75.56% to 60.00%, p<0.001), while slightly increasing specificity (88.85% to 93.47%, p<0.001) and PPVs (14.88% to 19.15%, p<0.001). Increasing threshold from 5 mm to 7 mm enhanced the AUC for 'MIA+IA' (from 0.711 to 0.829), 'AAH+AIS+MIA+IA' (from 0.748 to 0.804) and 'IA-only' (from 0.783 to 0.833). At 8 mm, the AUCs for these categories were similar. However, increasing the threshold from 7 mm to 10 mm resulted in reduced AUCs for 'MIA+IA' (0.829 to 0.767), 'AAH+AIS+MIA+IA' (0.804 to 0.744) and 'IA-only' (0.833 to 0.800). DCA reveals that the 8 mm predictive model demonstrates greater clinical utility compared with models with other thresholds.

conclusionsIncreasing the diameter threshold for positive results for pGGNs, up to 8 mm could enhance diagnostic performance. TRIAL REGISTRATION NUMBER: NCT04938804.

Indexed as

AdenocarcinomaLung NeoplasmsMultiple Pulmonary NodulesSolitary Pulmonary NoduleTomography, X-Ray ComputedAdultAgedChinaFemaleHumansMaleMiddle AgedPredictive Value of TestsRadiation DosageRetrospective StudiesSensitivity and SpecificityImaging/CT MRI etcLung CancerNon-Small Cell Lung CancerOccupational Lung DiseaseThoracic Surgery

Identifiers

PMID39689940
PMCPMC11877040

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Registered trials

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.