Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Low lung volumes are present with mild bibasilar atelectasis . No focal consolidation , pleural effusion or pneumothorax is seen . No acute osseous abnormality is visualized .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis . No focal consolidation to suggest pneumonia .