Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded and show mild interstitial opacities . The cardiac silhouette is top normal or slightly enlarged . The mediastinal silhouette and hilar contours are within normal limits for age . No pleural effusion or pneumothorax is present . Thoracic scoliosis is partially imaged .
    OUTPUT:
    
Possible mild interstitial edema .