Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lung volumes are slightly low , but the lungs appear clear . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Slightly low lung volumes . No evidence of focal consolidation to suggest pneumonia .