Fig. 2

Non-contrast enhanced thin-section CT scans on day 4 after symptom onset. a, b Lung window, bilateral ground-glass opacities with clear boundary, multifocal consolidations, air bronchograms, smooth interlobular and intralobular septal thickening could be seen (black triangle). c, d Mediastinum window, lymphadenopathy (white arrow), bilateral pleural effusions (black arrows), and moderate pericardial effusions (curved white arrow) were shown