Figure 1: Transverse thin-section lung computed tomography at the level of the main bronchi, left atrium, and lower lung zone from left to right. The initial scan (top row) showed predominantly subpleural and lower lobe reticulation and ground-glass opacities with immediate subpleural sparing in the right lung. Consolidations are seen in the dependent part of the left lower lobe and traction bronchiectasis in the anterior and posterior basal left lower lungs. Follow-up scans (bottom row) 1 year later showed an increase in the extent of reticulation and consolidation. New peripheral consolidations with surrounding ground-glass opacities in the posterior right upper lobe and progressive consolidations in the left lower lobe were biopsy-proven mucinous adenocarcinomas