ostium
- noun
- /ˈɑːstiəm/
- Specialized
:
ostio
- The sphenoethmoid recess was extremely narrow, and the ostium of the sphenoid sinus was barely seen.
- sphenoid sinus ostium
- sinus ostium
- maxillary sinus ostium
Examples
-
We advised the patient that because the lesion was large enough to eventually obstruct the sinus ostium, surgery was justified, and the patient consented.
Academic text (2004) -
The inferior portion of the right superior turbinate was resected with the microdebrider, and the sphenoid sinus ostium was enlarged medially and inferiorly.
Academic text (2009) -
The ostium was widened posteriorly into the posterior fontanelle.
Academic text (2005) -
We approached the left maxillary sinus endoscopically through the enlarged natural ostium.
Academic text (2004) -
The uncinate process was excised endoscopically, and the ostium of the maxillary sinus was visualized.
Academic text (2005) -
Evaluation of the ostiomeatal complex revealed mucosal hyperplasia and polyposis of the frontal sinus ostium.
Academic text (2005) -
A transnasal approach to the sphenoid sinus has been described, with the superior turbinate used as a landmark, particularly when the natural sphenoid ostium is not easily seen.
Academic text (2009) -
Endoscopic examination 4 months postoperatively revealed a widely patent sphenoid ostium and no discharge. Isolated persistent sphenoid sinusitis is not uncommon.
Academic text (2009) -
We based our surgical indications on the size of the lesion (which was large enough to obstruct the sinus ostium) and the mucosal reaction around it (a potential cause of chronic sinusitis).
Academic text (2004) -
The doctor examined the ostium of the patient's sinus to ensure it was clear of any blockages.
Synonyms
1
9.9
A mouthlike opening in a living body that lets water or food pass
A small hole in a fungus or algae that lets spores out
A large opening in a sponge where water flows out
How Small
Surface Forms
Etymology
Ostium comes from the Latin word ostium meaning 'door' or 'entrance', so in anatomy think of it as a tiny door that lets blood, air, or other fluids pass into or out of a part of the body.