Assertion: spontaneous pneumothorax | /r/HasProperty | rare event
Facets:
value: very
type: DEGREE
Source sentences:
text: Spontaneous pneumothorax caused by pulmonary ossification is a rare event though pulmonary ossification is not so uncommon.
text: Simultaneous bilateral spontaneous pneumothorax (SBSP) is a very rare condition, accounting for ~1% of all spontaneous pneumothoraces .
text: Simultaneous bilateral spontaneous pneumothorax is a very rare clinical event, comprising approximately 1% of all spontaneous pneumothoraces.