Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no pleural effusion , pneumothorax , focal opacities or consolidation . Cardiac and mediastinal silhouette is normal . Atherosclerotic calcification is again noted in the aortic arch . Degenerative changes of the thoracolumbar spine . Orthopedic hardware in the lower lumbar spine is noted , in unchanged position .
    OUTPUT:
    
No acute cardiopulmonary process .