Figure 3.

CT and TUS findings in mild COVID-19 pneumonia. A 57-year-old female patient presenting in ED with a 1 week fever, dyspnea, cough, and fatigue. The RT-PCR assay on nasopharyngeal swab confirmed the suspect for COVID-19 pneumonia. In (A), axial CT scan passing through the upper lobes shows a peripheral focal ground glass opacity located in the anterior parenchyma of right upper lobe and not adhering to the pleural surface. In (B), ultrasound scan with a convex probe (6 MHz) and thoracic setting in the upper region of the chest [blue box in (A)] shows a normal hyperechoic pleural line (white arrow) without B-lines. Axial CT scans passing through the tracheal carina [in (C)] and the middle lung regions [in (D)] show mixed areas of ground glass/consolidation with subpleural distribution in the left lower lobe. These lesions are located in the retroscapular area, resulting in being not visible on ultrasound scans. Axial CT scans passing through the middle lung regions [in (E)] and the lower lobes [in (G)] show rounded focal ground glass opacities with central distribution in the lingula and the left lower lobe. In (F,H), ultrasound scans with a convex probe (6 MHz) and thoracic setting, corresponding to the blue boxes in the respective CT scans, show a normal hyperechoic pleural line without B-lines (white arrow). In (I), axial CT scan passing through the basal lung regions shows no significant lesions. In (J), ultrasound scan with a convex probe (6 MHz) and thoracic setting, corresponding to the blue box in the respective CT scan, shows a normal hyperechoic pleural line (white arrow) near the correspondent right posterior costofrenic sinus.