Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , there is no focal consolidation . Heart size is top normal . The aorta is unchanged since ___ , chronically tortuous and possibly dilated . There are no pleural effusions or pneumothorax . No free air under the diaphragm .
    OUTPUT:
    
No acute cardiopulmonary process . Low lung volumes .