Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . There is likely a small hiatal hernia accounting for prominence of the right lower mediastinal contour . Mediastinal and hilar contours are otherwise unremarkable . Scarring within the apices is re - demonstrated . Lungs are clear . No pleural effusion or pneumothorax is seen . Osseous structures are diffusely demineralized without an acute abnormality .
    OUTPUT:
    
No acute cardiopulmonary abnormality .