• Etiology: sequelae of respiratory syncytial virus infection
  • Imaging: airway thickening, hyperinflation due to ball-valve effect, shifting subsegmental atelectasis from mucous plugs
  • DDX: viral pneumonia, congenital heart disease
  • Complications: pneumomediastinum, pneumothorax, pulmonary edema

Cases of Asthma

CXR of cardiogenic pulmonary edema in asthma
CXR AP (left) shows cardiomegaly and bilateral perihilar interstitial infiltrates due to pulmonary vascular congestion. CXR AP (right) obtained after resolution of symptoms shows the heart and pulmonary vascularity to be normal in appearance while the airways are thickened and the lungs are hyperexpanded.