Assertion: pneumothorax | /r/CreatedBy | trauma
Facets:
value: often
type: TEMPORAL
value: in some cases
type: OTHER
Source sentences:
text: In some cases, a pneumothorax is caused by an injury or trauma, but it can also occur spontaneously and is most common among young men and tall lean men.
text: Pneumothorax is often caused by an injury or trauma to the chest, like what a person might sustain in a car accident.