Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large right pleural effusion . There is persistent aeration of the RUL . Consolidation and collapse of the RML and RLL - underlying mass or pneumonia can not be excluded . Left lung is clear . The airway is midline . The left lung field is clear . There is no pneumothorax or fracture .
    OUTPUT:
    
As above . Please refer to subsequent CT of the chest for further details .