Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Small amount of pneumomediastinum is noted with air tracking along the fascia planes of the neck . Lungs are clear . No pneumothorax or pleural effusion is demonstrated . The pulmonary vasculature is normal . There are no acute osseous abnormalities .
    OUTPUT:
    
Small amount of pneumomediastinum with air tracking along the fascia planes of the neck . No acute cardiopulmonary abnormality otherwise identified .