Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , slightly increased opacification of the left mid lung , accompanied by increased size of left pleural effusion . Aeration of the right lower lung has improved . Lungs are persistently hyperinflated . No pneumothorax . Moderate cardiomegaly is unchanged .
    OUTPUT:
    
1 . Compared with the prior radiograph , increased left basilar and mid lung opacification , accompanied by increased pleural fluid . 2 . Improved aeration of the right lower lung . 3 . Persistent cardiomegaly .