Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Multiple sternal wires and a prosthetic heart valve are unchanged in orientation since the ___ radiograph . There are moderate atherosclerotic calcifications throughout the aortic arch . There is no pneumothorax , focal consolidation , or pleural effusion . Moderate degenerate changes throughout the thoracolumbar spine remain stable .
    OUTPUT:
    
No acute intrathoracic process .