Figure 1. Chest X-ray patterns: (A) hyperinflation; (B) interstitial, characterized by reticular or nodular opacities, bronchovascular or peripheral interstitial thickening, and architectural distortion; (C) volume loss, characterized by atelectasis or small lung size, without parenchymal abnormalities; and (D) miscellaneous abnormalities, defined as any lung abnormality not described above, such as nodules, masses, consolidation, and cavitation.
