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Table 2 Distribution and frequency of the CT pulmonary abnormalities at different phases

From: Chest CT in COVID-19 pneumonia: a correlation of lung abnormalities with duration and severity of symptoms

  Early phase (0–2 days; n = 60) Intermediate phase (3–7 days; n = 116) Late phase (8–14 days; n = 36)
No CT findings 32 (15.1%) 4 (1.9%)
Positive CT findings 28 (13.2%) 112 (52.8%) 36 (17%)
GGO only 24 (11.3%) 9 (4.2%)
Consolidation only 12 (5.7%)
Both 4 (1.9%) 57 (26.9%) 36 (17%)
Crazy paving 32 (15.1%) 24 (11.3%)
Reversed halo 16 (%) 20 (9.4%)
Linear consolidation 28 (13.2%)
Pleural effusion 4 (1.9%)
Peripheral distribution 23 (10.8%) 24 (11.3%) 4 (1.9%)
Central distribution
Diffuse distribution 5 (2.3%) 88 (41.5%) 32 (15.1%)
Unilateral lung affection 4 (1.9%)
bilateral lung affection 24 (11.3%) 112 (52.8%) 36 (17%)
One lobe of affection 4 (1.9%)
Two lobes of affection 7 (3.3%)
Three lobes of affection 13 (6.1%) 28 (13.2%)
Four lobes of affection 4 (1.9%) 48 (22.6%) 13 (6.1%)
Five lobes of affection 35 (16.5%) 24 (11.3%)
Total lung severity score
mean ± SD
2.13 ± 2.574 16.08 ± 3.141 17.83 ± 3.229
  1. Data are numbers of patients (percentages of the total number, 212). GGO ground-glass opacity