1. Pneumopericardium resulting in cardiac tamponade;Cummings;Ann Thorac Surg,1984
2. Delayed post-traumatic pneumopericardium producing acute cardiac tamponade;Lynn;Can J Surg,1983
3. Air tamponade;Damp;S Afr Med J,1984
4. Pneumopericardium and pneumothorax complicating bronchogenic carcinoma;Baydur;West J Med,1976
5. Pneumopericardium associated with bronchogenic carcinoma;Harris;Chest,1975