Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear . There are streaky linear lucencies projecting over the neck , mediastinum , and along the cardiac border concerning for pneumomediastinum . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Pneumomediastinum with extension into the soft tissues of the neck . ___ by telephone to Dr . ___ at 1 : 50 pm , ___ , 30 minutes after discovery .