A CT scan of a pneumothorax, a chest injury that may accompany<unk>  A<unk>  can cause air to leak out of the lacerated lung and into the pleural space, if the<unk>  goes through to it.<unk>  invariably results in pneumothorax (due to torn airways), hemothorax (due to torn blood vessels), or a hemopneumothorax (with both blood and air in the chest cavity). Unlike hemothoraces that occur due to<unk>  contusion, those due to lung<unk>  may be large and long lasting. However, the lungs do not usually bleed very much because the blood vessels involved are small and the pressure within them is low. Therefore, pneumothorax is usually more of a problem than hemothorax. A pneumothorax may form or be turned into a tension pneumothorax by mechanical ventilation, which may force air out of the tear in the lung. The<unk>  may also close up by itself, which can cause it to trap blood and potentially form a cyst or hematoma. Because the lung is elastic, the tear forms a round cyst called a traumatic air cyst that may be filled with air, or blood and air, and that usually shrinks over a period of weeks or months.<unk> s that are filled with air are called pneumatoceles, and those that are filled with blood are called<unk>  hematomas. In some cases, both pneumatoceles and hematomas exist in the same injured lung. A pneumatocele can become enlarged, for example when the patient is mechanically ventilated or has acute respiratory distress syndrome, in which case it may not go away for months.<unk>  hematomas take longer to heal than simple pneumatoceles and commonly leave the lungs scarred. Over time, the walls of lung<unk> s tend to grow thicker due to edema and bleeding at the edges.
Pulmonary laceration
Pulmonary hematoma
Pulmonary contusion
Hemothorax
Cerebral laceration
Urinothorax
Diaphragmatic rupture
Thoracic aorta injury