Fig. 3: Imaging features of the lungs in the COVID-19 and CAR-T groups.

a Transverse chest CT images from a 74-year-old man with grade 4 CRS in COVID-19 group showing bilateral diffuse ground-glass opacity, patchy and streak hyperdensities on day 29 after sCRS onset. b Transverse chest CT images from a 23-year-old woman with grade 4 CRS in CAR-T group showing bilateral patchy hyperdensities, with uneven internal density and pleural effusion on day 8 after sCRS onset.