Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Tortuosity of the aorta is stable . The lungs are well expanded and clear . There is no pneumothorax or pleural effusion . The hilar and mediastinal contours are unremarkable .
    OUTPUT:
    
No acute abnormalities identified to explain patient 's leukocytosis and cough .