CT manifestations of coronavirus disease-2019: A retrospective analysis of 73 cases by disease severity.
PURPOSE
To report CT features of coronavirus disease-2019 (COVID-19) in patients with various disease severity.


METHODS
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.


RESULTS
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.


CONCLUSIONS
Different CT features are seen according to disease severity, which can help COVID-19 stratification.
['Liu|Kai-Cai|KC|', 'Xu|Ping|P|', 'Lv|Wei-Fu|WF|', 'Qiu|Xiao-Hui|XH|', 'Yao|Jin-Long|JL|', 'Gu|Jin-Feng|JF|', 'Wei|Wei|W|']
D000293:Adolescent D000328:Adult D000368:Aged D000369:Aged, 80 and over D000073640:Betacoronavirus D000086382:COVID-19 D002648:Child D002675:Child, Preschool D018352:Coronavirus Infections D018450:Disease Progression D005260:Female D006801:Humans D008297:Male D008875:Middle Aged D058873:Pandemics D010996:Pleural Effusion D011024:Pneumonia, Viral D001261:Pulmonary Atelectasis D012189:Retrospective Studies D000086402:SARS-CoV-2 D012720:Severity of Illness Index D014057:Tomography, X-Ray Computed D055815:Young Adult
Coronavirus disease-2019 Diagnosis Pneumonia Computer tomography X-ray