Fig. 4From: The mean severity score and its correlation with common computed tomography chest manifestations in Egyptian patients with COVID-2019 pneumoniaAxial chest CT lung window in different cases with COVID-19 pneumonia showing a the reversed halo sign: right lower lobe posterior basal segment patchy consolidation with internal lucency. b Halo sign: patchy consolidation with a surrounding halo of ground-glass density at the right lower lobe apical segment (b) and at the left lower lobe (c)Back to article page