Assertion: frontal sinus | /r/HasProperty | thought as more symptomatic sinus
Facets:
value: because of the difficulties
type: CAUSE
value: often
type: TEMPORAL
Source sentences:
text: The frontal sinus is also often thought of as a more “symptomatic sinus” because of the difficulties encountered in frontal sinusitis and maintaining a patent frontal sinus ostium in patients with difficult to treat (frontal) rhinosinusitis.