Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are unremarkable . Bones are intact . Along the right side of the thorax and extending to the neck , there is subcutaneous emphysema from an unclear etiology . No definite pneumothorax is seen , query subtle right pneumothorax ; the subcutaneous air could be a sign that one is present and we are not as well appreciating it on this portable radiograph - inspiratory / expiratory films may help in the differentiation . Linear atelectasis is seen at the right lung base . The left lung is clear .
    OUTPUT:
    
Subcutaneous air tracking along the right neck and right chest wall . Query subtle right pneumothorax . Inspiratory / expiratory films may help in the delineating a pneumothorax if one exists . Findings were discussed with Dr . ___ in the ___ after the conclusion of the study on ___ .