Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change . The lungs are clear . No focal consolidation , edema , effusion , or pneumothorax . The heart is normal in size . The mediastinum is not widened . The hila are unremarkable . Mild tortuosity of the descending thoracic aorta is also unchanged .
    OUTPUT:
    
No acute intrathoracic process .