A<unk>  (or lung<unk>  is a<unk>  (bruise) of the lung, caused by chest trauma. As a result of damage to capillaries, blood and other fluids accumulate in the lung tissue.  The excess fluid interferes with gas exchange, potentially leading to inadequate oxygen levels (hypoxia).  Unlike<unk>  laceration, another type of lung injury,<unk>  does not involve a cut or tear of the lung tissue.
Pulmonary contusion
Hemothorax
Pulmonary hematoma
Diaphragmatic rupture
Urinothorax
Hemopneumothorax
Hydropneumothorax
Flail chest