Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is again patchy density projecting over the left upper lung suggesting a mild chronic abnormality . The lungs appear otherwise clear . There is no pleural effusion or pneumothorax . The bones are probably demineralized . Mild loss in height among several thoracolumbar vertebral bodies is probably unchanged . An inferior vena cava filter again projects at the level of the uppermost inferior vena cava , not significantly changed .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .