Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Now the patient is status post median sternotomy . A left - sided pacemaker generator pack projects leads into the right atrium and ventricle . The heart size is normal . The hilar and mediastinal contours are within normal limits . There is no pneumothorax , focal consolidation , or pleural effusion .
    OUTPUT:
    
No acute intrathoracic process .