Figure 12. Adult respiratory distress syndrome in a 27-year-old man who developed barotrauma and pulmonary interstitial emphysema. High-resolution CT scan shows scattered ground-glass attenuation and thickening of the intra- and interlobular septa (crazy-paving pattern). Note the air within the areas of interlobular thickening, a finding indicative of pulmonary emphysema. (Reprinted, with permission, from reference 43.)