Figure 1. a, b.

Axial (a) and coronal (b) CT images of a 55-year-old female patient with progressive dyspnea and fever shows the peripheral distribution of ground glass opacities (GGOs, black arrows) more prominent at lower lobes. CT scans shows GGO surrounded by a rim of consolidation (the reversed halo sign) at right lower and left upper lobes (red arrows).