PMC10242033_01
Chest computed tomography scan 1 day before admission. The lung window shows diffuse mixed ground-glass and consolidative opacities involving both lungs and small bilateral pleural effusion.
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F1
CT scan (Figure 1) revealed diffuse mixed ground-glass and consolidative opacities involving both lungs, thickening of the interlobular septa, bilateral pleural effusion, and subcutaneous soft tissue edema of the chest and back. CT pulmonary angiography (CTPA) showed no filling defect in the pulmonary artery.
Oil red O staining of bronchoalveolar lavage fluid specimen. Alveolar macrophages with multiple prominent red- or brown-staining cytoplasmic inclusions seen under light microscopy.
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F2
Cytopathologic evaluation of BALF revealed a multitude of tissue cells in the smear, with oil red O-positive bodies of different sizes and numbers in the cytoplasm of some cells, representing lipid droplets (Figure 2).
Chest computed tomography scan after discharge. There was no pulmonary infiltrates or pleural effusion.
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F3
Chest CT was normal (Figure 3), and prednisone was tapered to 10 mg daily for 3 days and then halted.