Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . There is evidence of tortuosity of the thoracic aorta . The mediastinal and hilar contours are unremarkable . The lungs are well expanded and clear . There is no pleural effusion or pneumothorax . There is evidence of osteophytes throughout the mid thoracic spine , likely secondary to degenerative changes . Otherwise , the visualized osseous structures are unremarkable .
    OUTPUT:
    
No evidence of acute cardiopulmonary abnormalities to explain the patient 's leukocytosis .