Chest CT findings. (a), (b) Axial CT images (1.5 mm thickness) of the chest show small nodules with ground-glass opacity in the lingular segment of the left upper lobe ((a), arrow) and the lateral segment of the right lower lobe ((b), arrowhead). (c) Axial CT image (1.5 mm thickness) shows ground-glass opacity with 30 mm diameter surrounded by dense linear consolidation (reversed halo sign) in the superior segment of the right lower lobe. (d) Coronal reconstructed image (3 mm thickness) also shows revered halo sign in the superior segment of the right lower lobe.
