Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is of top normal size , exaggerated by a by low lung volumes . Left pleural effusion has increased since the prior exam , now moderate . Right pleural effusion is small . Right infrahilar opacity has slightly improved since the prior exam . Retrocardiac opacity is compatible with atelectasis but infection is not excluded . Catheter of an accessed right chest wall port terminates in the right atrium .
    OUTPUT:
    
1 . Moderate left pleural effusion , increased since prior . Small right pleural effusion . No pneumothorax . 2 . Decrease in size of right infrahilar opacity . 3 . Retrocardiac opacity is compatible with atelectasis but may represent pneumonia in the appropriate clinical setting .