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HRCT chest (axial, coronal, and sagittal views) shows bilateral patchy ground-glass opacities, septal thickening, and subpleural band opacities. In the superior segment of left lower lobe, two cavitary lesions with adjacent consolidation are seen. Irregular & intersecting strands are noted within the cavitary lesions which–along with the pericavitary consolidations–give an appearance of a "bird's nest".
The radiological picture is suggestive of atypical fungal infection.