Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . Apparent blunting of the costophrenic angles may be due to overlying soft tissues . There is no pneumothorax . The lungs are well expanded and clear . Median sternotomy wires and pacemaker defibrillator are noted in unchanged positions .
    OUTPUT:
    
No acute cardiopulmonary process .