Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is mildly tortuous . Mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is normal . Lungs are hyperinflated with flattening of the diaphragms . Lungs are clear with no evidence for focal consolidation , pleural effusion or pneumothorax . Multilevel mild degenerative changes are present in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .