Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are poorly expanded , but there are no focal opacities . Cardiomediastinal and hilar contours are unchanged , with a left ventricular predominance again seen . The aorta is tortuous . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .