Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are moderately well inflated . There is a left pleural effusion with a dense left retrocardiac opacity likely underlying atelectasis . Linear atelectasis is seen in the right lower lobe . Cardiomediastinal silhouette otherwise unremarkable . Unchanged metallic hardware projecting over the lower cervical spine .
    OUTPUT:
    
Moderate left pleural effusion with underlying atelectasis . Linear atelectasis in right lower lobe .