Baseline chest CT showed abnormalities in 69 patients, and 53 (59%) patients had more than two lobes involved. More than half of the patients presented bilateral, multifocal lung lesions, with peripheral distribution. Lesions were inclined to distribute in the lower lobes. Of the 90 patients included, 65 (72%) had ground glass opacification, 12 (13%) had consolidation, and 11 (12%) patients presented with crazy paving pattern. Thirty-three (37%) patients had interlobular thickening, 55 (61%) had combined linear opacities, 7 (8%) showed air bronchogram sign, and 50 (56%) presented adjacent pleura thickening. Pleural effusion, pericardial effusion, cavitation, thoracic lymphadenopathy, and pulmonary emphysema were uncommon imaging findings in these patients (Table 2).
Table 2 Imaging findings of patients with SARS-CoV-2 at presentation
Patients (n = 90)
Distribution
  Periphery distribution 46 (51%)
  Bilateral involvement 53 (59%)
  Multifocal involvement 62 (69%)
  Unifocal involvement 7 (8%)
Number of lobes involved
  0 21 (23%)
  1 12 (13%)
  2 4 (4%)
  3 13 (14%)
  4 8 (9%)
  5 32 (36%)
  More than two lobes involved 53 (59%)
Lobe of lesion distribution
  Left upper lobe 48 (53%)
  Left lower lobe 55 (61%)
  Right upper lobe 48 (53%)
  Right middle lobe 40 (44%)
  Right lower lobe 59 (66%)
  Bilateral upper lobes 40 (44%)
  Bilateral lower lobes 47 (52%)
Patterns of the lesion
  Ground glass opacification 65 (72%)
  Consolidation 12 (13%)
  Crazy paving pattern 11 (12%)
  Cavitation 0 (0%)
Other signs in the lesion
  Interlobular septal thickening 33 (37%)
  Linear opacities combined 55 (61%)
  Air bronchogram sign 7 (8%)
Other findings
  Adjacent pleura thickening 50 (56%)
  Pleural effusion 4 (4%)
  Pericardial effusion 1 (1%)
  Lymphadenopathy 1 (1%)
  Pulmonary emphysema 0 (0%)