PMC9297369_01
PMC9297369_02
A timeline of the symptoms and managements.
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F1
This 9-year-old patient initially presented with paroxysmal cough (Figure 1). An electrocardiogram showed a sinus tachycardia with ST-T change and clockwise rotation (Supplementary Figure 1).
Computed tomography of the chest in the axial plane. (A) On hospital Day (HD) 1, showing slight inflammation in the middle lobe of the right lung and upper lobe of the left lung. (B) On HD 7, showing little emerging flaky exudation in the posterior basal segment of the left lower lobe.
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F2
Computed tomography showed slight inflammation in the middle lobe of the right lung and the upper lobe of the left lung (Figure 2A), which could rule out happy hypoxia. On HD 6, the echocardiography revealed a normal diameter and no filling defect of the inferior vena cava, a blood flow velocity of 0.23 m/s in the portal vein, and only traced mitral valve regurgitation (Supplementary Figure 2). On HD 7, computed tomography of the chest showed little emerging flaky exudation in the posterior basal segment of the left lower lobe (Figure 2B).