Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . No focal consolidation , edema , effusion , or pneumothorax . The heart is top - normal in size . The thoracic aorta is unchanged from the prior study when consideration is given to slight patient rotation . No acute osseous abnormality .
    OUTPUT:
    
No acute cardiopulmonary radiographic abnormality . Note that aortic dissection may be present in the absence of chest radiographic findings . Therefore , and this diagnosis is entertained clinically , dedicated chest CTA would be recommended , if warranted clinically .