Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is top normal in size . No pleural effusion or pneumothorax is identified . There are minimal bibasilar patchy opacities consistent with atelectatic changes . No focal consolidations are present . Underlying bones appear grossly intact .
    OUTPUT:
    
Chronic - appearing bilateral parenchymal changes .