Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no change from the exam from two days prior . Pacemaker generator overlies the anterior chest with leads that appear intact throughout their course and project over the expected locations in the right atrium and right ventricle . The patient is status post median sternotomy and CABG . Mediastinal silhouette and hilar contours are within normal limits . Lung volumes are low and again noted at the left lung base are linear opacities consistent with atelectasis .
    OUTPUT:
    
No change and no acute intrathoracic process .