Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are normal . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities . Rounded opacity projecting over the superior mediastinum appears to reflect a prominent sternum , and appears grossly unchanged compared to the scout view from the CT cervical spine in ___ .
    OUTPUT:
    
No acute cardiopulmonary process .