Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aorta is mildly tortuous with atherosclerotic calcifications noted at the aortic knob . Mediastinal and hilar contours are otherwise unremarkable . The pulmonary vasculature is not engorged . Lungs are clear . No pleural effusion or pneumothorax is detected . No displaced fractures are evident .
    OUTPUT:
    
No acute cardiopulmonary abnormality .