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 . A calcification projecting over the lateral right mid lung may be due to a bone island in the adjacent seventh rib or a parenchymal granuloma but in any case appears as a benign finding and unchanged . Otherwise the lung fields appear clear .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .