Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are vertical linear lucencies along the left paratracheal stripe , possibly reflecting a pneumomediastinum . Recommend clinical correlation for possible trauma . The heart is normal in size , and the lungs are clear without focal consolidation , pleural effusion or pulmonary edema .
    OUTPUT:
    
Vertical linear lucencies along the left paratracheal stripe may reflect pneumomediastinum . Recommend clinical correlation for possible pneumomediastinum and possible trauma .