Fig. 2
Typically radiological signs described for COVID-19. a. Ground-glass opacities distributed peripherally and subpleurally at right lower lobe. b. Bilaterally upper and lower lobe involvement. c-d. Crazy-paving pattern evolving into consolidation in day 4. e. Peripheral halo sign. f. Reverse halo sign. g. Vascular enlargement in the lesion (arrow). h. Vacuolar sign in the crazy-paving pattern (arrow). i. Prominence of interlobular septal thickening in the healing process. j. Thick fibrotic bands formed by the regression of infiltration areas in bilateral lower lobes (white arrows)