Assertion: pneumothorax | /r/HasProperty | less lung air
Facets:
value: on expiration
type: TEMPORAL
Source sentences:
text: On an expiration film, the pneumothorax will be more evident because on expiration, there is less lung air, therefore, the lungs will look whiter, making the density difference between the pneumothorax and the lungs more evident, and the size of the pneumothorax will appear larger.