Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small left pleural effusion with overlying atelectasis . Otherwise , the lungs are clear . No right pleural effusion is seen . There is no evidence of pneumothorax . . The cardiac and mediastinal silhouettes are unremarkable . Anchor screws project over the left humeral head .
    OUTPUT:
    
Small left pleural effusion .