Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The chest is hyperinflated . Streaky opacities at the lung bases are most consistent with minor atelectasis . Otherwise , the lungs appear clear . No fracture is identified .
    OUTPUT:
    
No evidence of acute disease or injury .