bronchiolitis with air trapping can have appearance of decreased lung density on expiration
- related: respiratory bronchiolitis
- tags: #literature
- source: An Algorithmic Approach to Lung Disease
- on expiration, normal lung becomes denser and whiter. Abnormal lung remains dark.
Chest CT (axial views): respiratory bronchiolitis-associated interstitial lung disease (RB-ILD).
CT findings in RB-ILD commonly consist of patchy ground glass opacities, centrilobular nodules, and air trapping. 1