Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable view of the chest demonstrates large pleural effusion , which has increased since study obtained 22 hours prior . There is progression of left lung atelectasis with leftward shift of midline structures . Right lung remains well aerated . Aortic arch calcifications are noted . Heart is top normal in size . Biliary drain and metallic stent is seen in the right upper abdomen .
    OUTPUT:
    
Interval increase in large left pleural effusion and left lung atelectasis . Right lung remains well aerated .