Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle right basilar opacity may be due to atelectasis although infectious process is not excluded in the appropriate clinical setting . The left lung is clear . No pleural effusion or pneumothorax is seen . Subtle lucency along the mediastinum including along the upper left cardiac border and upper mediastinum is concerning for pneumomediastinum . Mediastinal lucency also seen on the lateral view . The cardiac silhouette is not enlarged .
    OUTPUT:
    
Findings worrisome for pneumomediastinum . Findings could be further assessed on CT .