Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . There is no focal airspace opacity to suggest pneumonia . Heart size is normal . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . There is mild anterior wedging of a lower thoracic vertebral body unchanged from prior .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Slightly low lung volumes .