Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No focal consolidation , effusion , edema , or pneumothorax . The heart size is normal . The mediastinum is not widened . Mild aortic knob calcifications are overall unchanged . Overall appearance of the thoracic spine is similar to ___ . External material projects over the right shoulder .
    OUTPUT:
    
No acute cardiopulmonary process .