Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . The aorta is unremarkable and there is no distention of the azygos vein . The lungs are clear . There are no focal consolidations , pleural effusions , pulmonary edema or pneumothorax .
    OUTPUT:
    
No evidence of pulmonary metastases .