Assertion: frontal sinus | /r/HasProperty | entered
Facets:
value: endonasally
type: MANNER
Source sentences:
text: Once the frontal sinus has been entered, bone removal continues under direct endoscopic visualization.
text: Without an image-guidance system, initial drilling is "blind" until the frontal sinus is entered.
text: Direct access from the nose into the frontal sinus can be obtained in less than 50% of the patients, but by removing a portion of the agger nasi cells, the frontal sinus can be entered endonasally.