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Figure 1. Course of the patient’s COVID-19 pneumonia and necrotizing pneumonia due to Pseudomonas aeruginosa . (a-c) Chest computed tomography findings on admission showing bilateral ground-glass opacities in the upper lobe, and bilateral consolidation in the lower lobe of both lungs. (d-f) Chest computed tomography findings on hospital day 12 showing multiple thick-walled cavities with patchy shadows and ground-glass opacities detected as new findings, with near-complete resolution of the bilateral ground-grass opacities and consolidation detected on admission.