Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear without focal airspace opacity to suggest pneumonia . The aorta is again tortuous and unfolded . The heart is top normal in size . The hilar and mediastinal contours are stable . There is no pleural effusion or pneumothorax . Surgical clips project over the upper abdomen . There are mild - to - moderate degenerative changes in the thoracic spine .
    OUTPUT:
    
No evidence of acute cardiopulmonary abnormality . No significant interval change .