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Chest CT Findings of COVID-19 Patients with Mild Clinical Symptoms at a Single Hospital in Korea

대한영상의학회지 2021년 82권 1호 p.139 ~ 151
백운영, 이영경, 김수현, 함초롬, 안미영, 오동현, 최재필,
소속 상세정보
백운영 ( Baek Woon-Young ) - Seoul Medical Center Department of Radiology
이영경 ( Lee Young-Kyung ) - Seoul Medical Center Department of Radiology
김수현 ( Kim Su-Hyun ) - Seoul Medical Center Department of Internal Medicine
함초롬 ( Hahm Cho-Rom ) - Seoul Medical Center Department of Internal Medicine
안미영 ( Ahn Mi-Young ) - Seoul Medical Center Department of Internal Medicine
오동현 ( Oh Dong-Hyun ) - Seoul Medical Center Department of Internal Medicine
최재필 ( 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℃ 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.

키워드

COVID-19; SARS-CoV-2; Pneumonia, Viral; Computed Tomography, X-Ray

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