Fig. 1. Representative chest radiographic (A) and CT images (B, C) of COVID-19 pneumonia manifesting as confluent mixed ground-glass opacities and consolidation on CT.

A. Anteroposterior chest radiograph shows multifocal patchy peripheral consolidations in bilateral lungs, except for left upper lung zone. B, C. Coronal and axial chest CT images show confluent mixed ground-glass opacities and consolidative lesions in peripheral bilateral lungs. Discrete patchy consolidation (arrowheads) is noted in left upper lobe. On axial CT image (C), confluent lesions are mainly distributed in peripheral lung along bronchovascular bundles. Most of lesions spare juxtapleural area, and minor proportion of lesions touch pleura. Lesions contain multiple air-bronchograms, and air-bronchogram in superior segment of right lower lobe is distorted (arrows). COVID-19 = Coronavirus disease 2019, CT = computed tomography