Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Thoracolumbar fusion rods are again seen , unchanged in position and orientation since the ___ examination . There is severe dextroscoliosis of the mid thoracic spine . A left - sided cardiac pacemaker projects leads into the right atrium and ventricle . The heart size is normal . The hilar and mediastinal contours are unchanged . There is no pneumothorax , focal consolidation , or pleural effusion .
    OUTPUT:
    
No acute intrathoracic process .