Subcutaneous emphysema of the face or neck which may extend into the mediastinum can complicate the use of high-speed air-turbine dental drills (1-5) or dental extractions (1). Pneumopericardium with subcutaneous emphysema has also occurred after maxillary surgery (6). Pneumopericardium, where air may have forced its way through a tear in the mucous membrane of the upper respiratory passages, h...

Introduction: Pneumopericardium is a rare entity that is defined as the collection of air within the confines of the pericardial sac. It is seen as a consequence of chest trauma or mechanical ventilation. Presentation of case: A 55-year-old man was admitted to The Canberra Hospital following a collision between a bus and a pushbike. He sustained head, chest and abdominal injuries. An unusual fe...

Pulmonary overinflation syndrome (POIS) is a group of barotrauma-related diseases caused by the expansion of gas trapped in the lung, or over-pressurization of the lung with subsequent over-expansion and rupture of the alveolar air sacs. This group of disorders includes arterial gas embolism, tension pneumothorax, mediastinal emphysema, subcutaneous emphysema and rarely pneumopericardium. In th...

Abstract Neonatal pneumopericardium, a collection of air in the pericardial sac, is less common form leak syndrome, but unfortunately with high mortality rate. We report rare case male fullterm newborn who soon after birth presented respiratory distress. Chest radiograph showed spontaneous bilateral pneumothorax which chest drain was placed between anterior and midaxillary line 5 th right inter...