Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is likely tortuous . Pulmonary vasculature is not engorged . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .