IS case 487: Pneumomediastinum with spinnaker sail sign
Imaging Sciences URMC 2010
Publication Date: 2010-08-30
Pneumomediastinum is the presence of air within the mediastinum. On the frontal chest radiograph, classic signs of pneumomediastinum include air between the heart and mediastinal pleural surfaces, air present at the base of the heart, air producing irregular radiolucent streaks in the paratracheal area, and cervical subcutaneous emphysema. Causes include asthma, barotrauma, childbirth, pneumothorax, tracheobronchial laceration, esophageal perforation, mediastinal surgery, Boerhaave's syndrome, intraperitoneal and retroperitoneal bowel perforation, retroperitoneal surgery, esophageal rupture, facial fractures, mediastinitis, dental or retropharyngeal infection. This case is a good example of the Spinnaker sail sign in which the thymus is lifted off of the mediastinum by air in the mediastinum.
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