Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Since the prior exam , there has been interval increase in size of left pleural effusion with increasing left mid and lower lung consolidation , possibly representing atelectasis or pneumonia . There is only a small right effusion with probable mild right basal atelectasis . Upper lobe lucency suggests the presence of underlying emphysema . The heart size can not be assessed . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Opacification of the left mid - to - lower hemithorax concerning for increasing effusion and consolidation . Recommend followup to resolution .