Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are free of focal consolidation . Note is made of a small pleural effusion at the left lung base . No pleural effusion on the right . There is no pneumothorax . Cardiomediastinal contours are within normal limits . Known pericardial effusion is better assessed on the concurrent CTA .
    OUTPUT:
    
No pneumothorax . Known trace pericardial effusion is better assessed on the concurrent CTA chest .