Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The patient is status post median sternotomy and mitral valve replacement . Mediastinal and hilar contours are stable . There is no pulmonary vascular congestion . Left - sided dual - chamber pacemaker device is re - demonstrated with leads terminating in the right atrium and right right ventricle . No focal consolidation , pleural effusion or pneumothorax is seen . No acute osseous abnormalities are identified .
    OUTPUT:
    
No acute cardiopulmonary process .