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KMID : 1103720210820010139
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Journal of the Korean Society of Radiology
2021 Volume.82 No. 1 p.139 ~ p.151
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Chest CT Findings of COVID-19 Patients with Mild Clinical Symptoms at a Single Hospital in Korea
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Baek Woon-Young
Lee Young-Kyung
Kim Su-Hyun
Hahm Cho-Rom
Ahn Mi-Young
Oh Dong-Hyun
Choi Jae-Phil
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Abstract
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Purpose: To retrospectively evaluate the chest computed tomography (CT) findings of coronavirus disease 2019 (COVID-19) in patients with mild clinical symptoms at a single hospital in South Korea.
Materials and Methods: CT scans of 87 COVID-19 patients [43 men and 44 women; median age: 41 years (interquartile range: 26.1?51.0 years)] with mild clinical symptoms (fever < 38℃ and no dyspnea) were evaluated.
Results: CT findings were normal in 39 (44.8%) and abnormal in 48 (55.2%) patients. Among the 48 patients with lung opacities, 17 (35.4%) had unilateral disease and 31 (64.6%) had bilateral disease. One (2.1%) patient showed subpleural distribution, 9 (18.8%) showed peribronchovascular distribution, and 38 (79.2%) showed subpleural and peribronchovascular distributions. Twenty-two (45.8%) patients had pure ground-glass opacities (GGOs) with no consolidation, 17 (35.4%) had mixed opacities dominated by GGOs, and 9 (18.8%) had mixed opacities dominated by consolidation. No patients demonstrated consolidation without GGOs.
Conclusion: The most common CT finding of COVID-19 in patients with mild clinical symptoms was bilateral multiple GGO-dominant lesions with subpleural and peribronchovascular distribution and lower lung predilection. The initial chest CT of almost half of COVID-19 patients with mild clinical symptoms showed no lung parenchymal lesions. Compared to relatively severe cases, mild cases were more likely to manifest as unilateral disease with pure GGOs or GGO-dominant mixed opacities and less likely to show air bronchogram.
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KEYWORD
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COVID-19, SARS-CoV-2, Pneumonia, Viral, Computed Tomography, X-Ray
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