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Liu, Kai-Cai; Xu, Ping; Lv, Wei-Fu; Qiu, Xiao-Hui; Yao, Jin-Long; Gu, Jin-Feng; Wei, Wei
European journal of radiology, 05/2020, Volume: 126Journal Article
•Ground glass opacities in subpleural regions are the main CT features of COVID-19.•Pulmonary consolidation mostly occurs in critical patient.•Imaging features vary according to disease severity.•CT imaging can evaluate the severity and treatment outcome. To report CT features of coronavirus disease-2019 (COVID-19) in patients with various disease severity. The CT manifestations and clinical data of 73 patients with COVID-19 were retrospectively collected in 6 hospitals from Jan 21 to Feb 3, 2020. We analyzed the initial and follow-up CT features of patients with disease severity, according to the Guidelines for the Diagnosis and Treatment of New Coronavirus Pneumonia. Six patients (8%) were diagnosed as mild type pneumonia; these patients had no obvious abnormal CT findings or manifested mild changes of lung infection. All 43 patients (59 %) with common type presented unique or multiple ground-glass opacities (GGO) in the periphery of the lungs, with or without interlobular septal thickening. In the 21 patients (29 %) with severe type, extensive GGO and pulmonary consolidation were found in 16 cases (16/21, 76 %) and 5 cases (24 %), respectively. An extensive "white lung", with atelectasis and pleural effusion were found in critical type patients (3, 4%). On the resolutive phase of the disease, CT abnormalities showed complete resolution, or demonstrated residual linear opacities. Different CT features are seen according to disease severity, which can help COVID-19 stratification.
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