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Retrospective Analysis of Subsolid Nodules' Frequency Using Chest Computed Tomography Detection in an Outpatient
Ana Paula Zanardo1,2, Vicente Bohrer Brentano1, Rafael Domingos Grando1,2
1Hospital Moinhos de Vento, Porto Alegre 90560-030, Brazil.
Tomography (Ann Arbor, Mich.)
|August 25, 2023
Summary
Subsolid nodules (SSNs) were detected in 10.6% of non-screening outpatients undergoing chest computed tomography (CT). This finding highlights the importance of evaluating SSNs in routine clinical practice due to potential malignancy.
Area of Science:
- Radiology
- Pulmonary Medicine
- Diagnostic Imaging
Background:
- Subsolid nodules (SSNs) are increasingly identified on chest computed tomography (CT) scans.
- Understanding the frequency and characteristics of SSNs in non-screening populations is crucial for clinical management.
Purpose of the Study:
- To determine the detection rate and characteristics of SSNs in adult outpatients undergoing chest CT.
- To assess the prevalence of SSNs in a non-lung cancer screening cohort.
Main Methods:
- Retrospective analysis of 650 adult chest CT scans from ambulatory care.
- Inclusion of various lung-scanning protocols including high-resolution CT (HRCT) and low-dose CT (LDCT).
- Collection of SSN features (diameter, number, density, location) and assessment of emphysema and other nodules.
Main Results:
- Chest CT scans were performed on 756 patients, with 650 meeting inclusion criteria.
- 10.6% of patients had subsolid nodules detected.
- The median age was 53-73 years, and 58.3% of participants were female.
Conclusions:
- The detection rate of SSNs in routine outpatient chest CT is significant.
- Persistent SSNs warrant follow-up due to their potential for malignancy.
- These findings emphasize the clinical relevance of SSNs in non-screening populations.
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