Findings of more extensive GGO than consolidation on chest CT scans obtained during the first week of illness were considered findings highly suspicious of COVID-19, at the point during the COVID-19 outbreak when this study was performed.

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Cheng Z, Lu Y, Cao Q, et al. - Researchers examined the clinical features and CT manifestations of coronavirus disease 2019 (COVID-19) by comparing patients with COVID-19 pneumonia with patients with non–COVID-19 pneumonia who presented at a fever observation department in Shanghai, China. Between January 19 and February 6, 2020, individuals were retrospectively included in the study who underwent real-time reverse transcription–polymerase chain reaction (RT-PCR) testing. It was demonstrated that imaging patterns of multifocal, peripheral, pure  ground-glass opacities (GGO), mixed GGO, or consolidation with slight predominance in the lower lung and findings of more extensive GGO than consolidation on chest CT scans obtained during the first week of illness were considered findings highly suspicious of COVID-19, at the point during the COVID-19 outbreak when this study was performed.