Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears normal in size . The cardiac , mediastinal and hilar contours appear stable . Very mild subpleural thickening is unchanged at each lung apex . There is no pleural effusion or pneumothorax . The lung fields appear otherwise clear . Again noted is very mild leftward curvature centered along the lower thoracic spine .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .