Evolution of CT findings in patients with mild COVID-19 pneumonia.

A proportion of patients with GGO and consolidation presented a decreasing trend during the 21 days after disease onset ( y = 0.48–0.09 x , p < 0.01), while a proportion of patient with all three findings including ground glass opacities, consolidation, and linear opacities presented an increasing trend ( y = 0.12–0.11 x , p < 0.01).

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Total severity score showed an increasing trend in the first 2 weeks.

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