Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable including a focal rightward bulging mediastinal contour immediately above the right hemithorax earlier shown to represent a benign cyst . The heart is again mildly enlarged . The aorta is largely calcified . There is no pleural effusion or pneumothorax . The lungs appear clear . Mild degenerative changes are again present at the thoracolumbar junction .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .