Skip to main content
Top
Published in: Insights into Imaging 1/2023

Open Access 01-12-2023 | Computed Tomography | Original Article

Differentiation of pulmonary solid nodules attached to the pleura detected by thin-section CT

Authors: Jin Jiang, Fa-jin Lv, Yang Tao, Bin-jie Fu, Wang-jia Li, Rui-yu Lin, Zhi-gang Chu

Published in: Insights into Imaging | Issue 1/2023

Login to get access

Abstract

Background

Pulmonary solid pleura-attached nodules (SPANs) are not very commonly detected and thus not well studied and understood. This study aimed to identify the clinical and CT characteristics for differentiating benign and malignant SPANs.

Results

From January 2017 to March 2023, a total of 295 patients with 300 SPANs (128 benign and 172 malignant) were retrospectively enrolled. Between benign and malignant SPANs, there were significant differences in patients’ age, smoking history, clinical symptoms, CT features, nodule-pleura interface, adjacent pleural change, peripheral concomitant lesions, and lymph node enlargement. Multivariate analysis revealed that smoking history (odds ratio [OR], 2.016; 95% confidence interval [CI], 1.037–3.919; p = 0.039), abutting the mediastinal pleura (OR, 3.325; 95% CI, 1.235–8.949; p = 0.017), nodule diameter (> 15.6 mm) (OR, 2.266; 95% CI, 1.161–4.423; p = 0.016), lobulation (OR, 8.922; 95% CI, 4.567–17.431; p < 0.001), narrow basement to pleura (OR, 6.035; 95% CI, 2.847–12.795; p < 0.001), and simultaneous hilar and mediastinal lymph nodule enlargement (OR, 4.971; 95% CI, 1.526–16.198; p = 0.008) were independent predictors of malignant SPANs, and the area under the curve (AUC) of this model was 0.890 (sensitivity, 82.0%, specificity, 77.3%) (p < 0.001).

Conclusion

In patients with a smoking history, SPANs abutting the mediastinal pleura, having larger size (> 15.6 mm in diameter), lobulation, narrow basement, or simultaneous hilar and mediastinal lymph nodule enlargement are more likely to be malignant.

Critical relevance statement

The benign and malignant SPANs have significant differences in clinical and CT features. Understanding the differences between benign and malignant SPANs is helpful for selecting the high-risk ones and avoiding unnecessary surgical resection.

Key points

• The solid pleura-attached nodules (SPANs) are closely related to the pleura.
• Relationship between nodule and pleura and pleural changes are important for differentiating SPANs.
• Benign SPANs frequently have broad pleural thickening or embed in thickened pleura.
• Smoking history and lesions abutting the mediastinal pleura are indicators of malignant SPANs.
• Malignant SPANs usually have larger diameters, lobulation signs, narrow basements, and lymphadenopathy.

Graphical Abstract

Appendix
Available only for authorised users
Literature
37.
go back to reference Bazemore AW, Smucker DR (2002) Lymphadenopathy and malignancy. Am Fam Physician 66(11):2103–2110PubMed Bazemore AW, Smucker DR (2002) Lymphadenopathy and malignancy. Am Fam Physician 66(11):2103–2110PubMed
Metadata
Title
Differentiation of pulmonary solid nodules attached to the pleura detected by thin-section CT
Authors
Jin Jiang
Fa-jin Lv
Yang Tao
Bin-jie Fu
Wang-jia Li
Rui-yu Lin
Zhi-gang Chu
Publication date
01-12-2023
Publisher
Springer Vienna
Published in
Insights into Imaging / Issue 1/2023
Electronic ISSN: 1869-4101
DOI
https://doi.org/10.1186/s13244-023-01504-8

Other articles of this Issue 1/2023

Insights into Imaging 1/2023 Go to the issue