Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable for aside from some increase in the size of the heart , which is probably borderline in size , allowing for pectus excavatum . There is no pleural effusion or pneumothorax . The bones are probably demineralized . No fracture is identified .
    OUTPUT:
    
No evidence of injury .