Fig. 5
From: Clinical and CT findings of COVID-19: differences among three age groups
Typical CT signs. Halo sign a: Moderate type patient. CT showed a pGGO with halo sign in the left low lobe (arrow). reversed halo sign b: Moderate type patient. CT showed a mGGO with reversed halo sign (arrow). Crazy paving sign c: Moderate type patient. CT showed two pGGOs with crazy paving sign in the left low lobe (arrow). Cavity sign d: Moderate type patient. CT showed a pGGO with a small cavity (arrow)