Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate multiple sternotomy wires . The cardiomediastinal silhouette appears normal . Again seen is a large multiloculated left pleural effusion , bigger since yesterday . Nevertheless there is improve aeration in the left upper lobe -- ___ left heart border is slightly less obscured . There is no right pleural effusion . No pneumothorax is present .
    OUTPUT:
    
Progressive enlargement of a large multiloculated left pleural effusion over the past day , with slightly improved aeration in the largely atelectatic left lung .