Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky bibasilar and retrocardiac opacities appear slightly improved as compared to prior . The lungs are hyperinflated . Cardiac silhouette is unchanged . Pulmonary arteries appear enlarged . No pneumothorax .
    OUTPUT:
    
Streaky bibasilar and retrocardiac opacities appear slightly improved as compared to prior . While these likely represent atelectasis , infection could be considered in the appropriate clinical setting .