Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in the left retrocardiac and right lower lobe opacity can be worsening aspiration or infection . There is associated small pleural effusion . The right lung also has slight increase in basal atelectasis . The heart size is mildly enlarged . No interstitial pulmonary edema . No pneumothorax .
    OUTPUT:
    
Slight interval increase in the left retrocardiac and right lower lobe opacitycan be aspiration .