Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated suggesting COPD . There has been improvement in the left retrocardiac opacity , however there is persistent ill - defined opacification at the right base . There are no new focal consolidations . The pulmonary vasculature is normal . The heart is enlarged , but stable . There are no pleural effusions . There is no pneumothorax .
    OUTPUT:
    
1 . Persistent ill - defined opacification within the right lower lobe representing pneumonia , but improvement of the the retrocardiac opacity . 2 . Hyperinflated lungs suggesting COPD . 3 . Stable cardiomegaly .