Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . Streaky opacities in posterior lower lobes appear unchanged . Otherwise , the lungs appear clear . There is no pleural effusion or pneumothorax . Thoracolumbar compression deformities appear unchanged at the thoracolumbar junction .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .