CTICasesDiffuse Alveolar Damage with Alveolar Collapse
Imaging findings
Serial CT chest scans obtained two days apart in a patient with acute respiratory distress show rapid, progressive volume loss and diffuse, dependent ground-glass opacities and consolidations. The bronchial tree shows widespread, reversible dilatation (bronchial dilatation) within the collapsed lung regions.
Key takeaways
Acute lung injury progressing to diffuse alveolar damage (DAD) can cause severe surfactant dysfunction and widespread alveolar collapse. This manifests on CT as rapid, dramatic loss of lung volume over days. Associated bronchial dilatation is often secondary to mechanical parenchymal collapse (atelectasis) rather than fibrotic traction.
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