Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead left - sided pacer is stable in position . The patient is status post median sternotomy and cardiac valve replacements . Cardiac and mediastinal silhouettes are stable . Slight prominence of the hila is stable . No focal consolidation is seen . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No significant interval change from ___ . No acute cardiopulmonary process .