Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear unchanged . There is similar mild relative elevation of the right hemidiaphragm , compared to the left . There is no pleural effusion or pneumothorax . A small calcified lung nodule suggests a granuloma in the right upper lobe and appears unchanged . Otherwise , the lungs appear clear . The bony structures are unremarkable .
    OUTPUT:
    
No evidence of acute disease .