Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aorta remains tortuous . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . The osseous structures are diffusely demineralized with multilevel degenerative changes .
    OUTPUT:
    
No acute cardiopulmonary abnormality .