Fig. 3

Chest computed tomography (CT) images from a man (age range: 40–44 years old) with severe disease progression. a & b), at admission, transverse chest CT images show small ground-glass opacities in the left lower lobe and high-density shadows with blurred edges; c & d, In the observation ward the day before admission, transverse chest CT images show multiple nodules with blurred borders, mainly distributed in the subpleural area, indicating a progression from the previous CT examination; (e & h), Transverse chest CT images after 14-days of treatment and three negative nucleic acid tests show increased bilateral multiple patches and stripes with blurred borders, with the prominent distribution in the subpleural area, and apparent fibrous foci