Figure 2.

Chest X-ray examination of 64 years old man diagnosed with severe COVID-19 pneumonia. (A) On February 28, after tracheal intubation, chest X-ray showed interstitial inflammation of both lungs and a small amount of pleural effusion on both sides. (B) 7 days after tracheal intubation, chest X-ray examination showed multiple patchy increased density shadows in both lungs, which were more than before, and a small amount of pleural effusion on both sides was roughly the same as before. (C) Chest X-ray examination on March 28 before discharge showed multiple patches and strip like density shadows in double lungs, which were significantly improved than before. The right chest contains an air sac cavity.