Case 227

 This week, we present chest CT images in patients with COVID19. Chest CT findings were categorized into 4 types; slight ground glass; ground glass irrespective of homogeneous or inhomogeneous; consolidation; consolidation with fibrous component (Figs 1-4).

What is the correct combination on the appropriate microscopic findings corresponded to CT findings ?

a.　Fig. 1 ----- protein exudates (surfactant) in alveolar space

b.　Fig. 2 ----- infiltration of type II pneumocyte, lymphocytes, macrophage & dendric cells

c.　Fig. 3 ----- lymphocytes, macrophage & dendric cells in alveolar space

d.　Fig. 4 ----- infiltration of inflammatory cells and fibroblasts into alveolar space and fibrosis.

1.　a, b, c

2.　a, c, d

3.　b, c, d

4.　all

answer

2021.4.7