Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded , without focal parenchymal opacities . The aorta is tortuous and generally large but unchanged over more than and year , and the cardiomediastinal and hilar contours are otherwise unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .