Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are moderately hyperinflated , and a mild interstitial pulmonary abnormality is chronic . No pleural effusion . Borderline cardiomegaly is much improved . Hilar and mediastinal silhouettes are otherwise unremarkable . No pneumothorax . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
Possible COPD . Improved cardiomegaly .