Fig. 1.

63-Year-old male patient diagnosed with COVID-19 pneumonia. Axial images of non-contrast-enhanced CT obtained at the time of diagnosis show bilateral parenchymal infiltrations in the form of consolidation and ground-glass opacity, predominantly at the lower lobes and peripherally distributed (a, b). Axial images passing through the same level of non-contrast-enhanced CT obtained 10 days after the initial CT demonstrate newly formed cavitary nodules in the apicoposterior segment of the left upper lobe of the lung (black arrow) and the medial segment of the middle lobe of the right lung (white arrow) (c, d).