Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Coarsened interstitial markings are unchanged . Cardiomediastinal silhouette is slightly enlarged but unchanged from prior exam . There is no pneumothorax or pleural effusion . An old fracture of the left clavicle is noted .
    OUTPUT:
    
No acute cardiopulmonary process . Unchanged cardiomediastinal silhouette .