Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . Streaky right infrahilar opacities suggest minor atelectasis or scarring that appears unchanged . There is no pleural effusion or pneumothorax . Small osteophytes are noted along the lower thoracic spine .
    OUTPUT:
    
No evidence of acute disease .