Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is evidence of pneumomediastinum extending into the base of the neck in the supraclavicular region on the left . There is no visualized pneumothorax . There is an 8 mm nodule projecting over the right upper lung and anterior right first rib . The lungs are otherwise clear . The cardiomediastinal silhouette is otherwise unremarkable . No acute osseous abnormalities , no displaced rib fractures .
    OUTPUT:
    
Pneumomediastinum . No visualized pneumothorax . An 8 mm nodular opacity projecting over the right lung apex . It is possible that this is related to the anterior right first rib , apical lordotic can confirm after patient 's acute symptoms resolve .