Fig. 3

Computed tomography (CT) images of the lung field of Case 4. CT revealed the new appearance of ground-glass opacity, infiltrative shadows, and a rounded morphology (arrow) in the bilateral middle and lower lung fields (a). Fibrosis developed within 2 weeks (b) and then tended to disappear (c). The findings were highly suspicious of coronavirus disease 2019. Figure 3a was reprinted from reference [3]