Chest CT Findings of COVID-19 Patients with Mild Clinical Symptoms at a Single Hospital in Korea
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¹é¿î¿µ(Baek Woon-Young) - Seoul Medical Center Department of Radiology
ÀÌ¿µ°æ(Lee Young-Kyung) - Seoul Medical Center Department of Radiology
±è¼öÇö(Kim Su-Hyun) - Seoul Medical Center Department of Internal Medicine
ÇÔÃÊ·Ò(Hahm Cho-Rom) - Seoul Medical Center Department of Internal Medicine
¾È¹Ì¿µ(Ahn Mi-Young) - Seoul Medical Center Department of Internal Medicine
¿Àµ¿Çö(Oh Dong-Hyun) - Seoul Medical Center Department of Internal Medicine
ÃÖÀçÇÊ(Choi Jae-Phil) - Seoul Medical Center Department of Internal Medicine
Abstract
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¡É 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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COVID-19, SARS-CoV-2, Pneumonia, Viral, Computed Tomography, X-Ray
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The most common CT manifestation of COVID-19 in patients with mild clinical symptoms was bilateral multiple GGO-dominant lesions with subpleural and peribronchovascular distribution and lower lung predilection.