Fig. 1

Chest CT of this patient. a Chest CT was obtained on January 16, 2020 (hospital day 1, illness day 7). Multiple patchy shadows and cord-like ground-glass opacity (GGO) under the pleura and bilateral lungs were observed. b Chest CT was obtained on January 19, 2020 (hospital day 4, illness day 10). The texture of the trachea and blood vessels in both lungs showed thickening. GGO increased, and the original GGO was consolidated. c Chest CT was obtained on January 23, 2020 (hospital day 8, illness day 14). The patchy lesions in both lungs were absorbed, and the fiber shadow increased in size. d Chest CT was obtained on January 30, 2020 (hospital day 15, illness day 21). The consolidation in the bilateral lungs was further absorbed. The fiber strands were reduced, and GGO increased slightly