Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate left pleural effusion with overlying atelectasis , underlying consolidation is not excluded . The right lung is clear . No right pleural effusion is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Moderate left pleural effusion , with overlying atelectasis , underlying consolidation not excluded . No prior for comparison to assess for interval progression .