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Table 1 CT scan classification of COVID-associated pneumopathy

From: Protective reactive thymus hyperplasia in COVID-19 acute respiratory distress syndrome

0

Absent or minor pulmonary parenchymal changes

1

Limited ground-glass opacities

2

Bilateral ground-glass opacities < 50% of pulmonary parenchyma

3

Idem 2, with superimposed inter/intra lobular septal thickening, i.e. ‘crazy paving’

4

Bilateral ground-glass opacities > 50% of pulmonary parenchyma

5

Idem 4, with superimposed ‘crazy paving’

6

Idem 5, with pulmonary fibrosis