Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal without consolidation or nodules identified . A right pectoral pacemaker has 2 leads extending to the expected regions of the right atrium and right ventricle . The patient is status post median sternotomy and the metallic wires are intact and in line . There is no evidence of pleural effusion or pneumothorax . The heart is enlarged , but unchanged in appearance from the prior examination .
    OUTPUT:
    
No acute cardiopulmonary process .