Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pacemaker , pacemaker leads within the right atrium and ventricle , and multiple intact sternal wires are unchanged in configuration since ___ . An aortic valve replacement is unchanged in orientation . There is no pneumothorax , focal consolidation , or pleural effusion . Mild degenerative changes throughout the thoracic spine are stable .
    OUTPUT:
    
No acute intrathoracic process . Specifically , no consolidations .