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Table 1 Distribution of patients according to “Prevalence of HRCT findings”

From: Spectrum of HRCT findings among asymptomatic and recovered COVID-19 patients: how did they impact the clinical decision?

Prevalence of HRCT findings Asymptomatic COVID-19 patients
Initially screened Recovered
N (60) % N (60) %
* Unilateral versus bilateral lung involvement  
 Unilateral (one lung involved) 18 30% Not detected
 Bilateral (both lungs involved) 42 70% 60 100%
* Size and extension of the lesions
 Less than 3 cm 42 70% 10 16.7%
 Peripheral (> 3 cm longest dimension but < 3 cm extension from pleural surface). 15 25% 42 70%
 Peripheral (> 3 cm extension from pleural surface but < 50% of lobar involvement) or peri-bronchial (> 3 cm) 3 5% 6 10%
 Diffuse lobular pattern (extending proximally > 3 cm from pleural surface and > 50% of lobar involvement) Not detected 2 3.3%
* Number of the lesions (excluding diffuse lobar pattern)
 Less than 3 24 40% Not found
 More than 3 36 60% 60 100%
* HRCT findings
GGO nodules or patches 46 76.7% 36 60%
 “Atoll sign” (starting organization) 6 10% 24 40%
 “Air bubble sign” 1 1.7% 4 6.7%
Secondary fibrosis 6 10% 20 33.3%
 “Crazy paving pattern” 6 10% Not found
GGOs mixed with consolidative changes 14 23.3% 24 40%
 “Curvilinear” consolidations or fibro-consolidations 2 3.3% 24 40%
* Associated signs/findings
 Hydro-pneumothorax Not detected 1 1.7%
 Bronchial wall thickening and traction bronchiectasis Not detected 1 1.7%
  1. * Highest values are demonestrated in italic