Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are again slightly hyperexpanded , with slight coarsening of interstitial markings , unchanged compared to the prior study compatible with COPD . Minimal right basilar atelectasis or scarring is stable . There is no pneumothorax , overt pulmonary edema , or focal consolidation concerning for pneumonia . The heart is stable in size , allowing for technical differences .
    OUTPUT:
    
Findings compatible with COPD , stable since the prior study . No evidence of pneumonia .