Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Left - sided pacer device is again seen , unchanged in position , with lead seen extending to the expected locations of the right atrium , right ventricle , and coronary sinus . The patient is status post cardiac valve replacement and median sternotomy . The cardiac , mediastinal , and hilar contours are stable . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . Minimal interstitial edema may be present . Evidence of DISH is seen along the spine . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
No significant interval change .