Table 1.

CT scan classification of COVID-associated pneumopathy

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