ostiomeatal complex

Also found in: Acronyms.

os·ti·o·mea·tal com·plex

site in the middle meatus where the frontal and maxillary sinuses normally open into the nasal cavity; obstruction here predisposes infection in the sinus cavities.
Synonym(s): ostiomeatal unit
References in periodicals archive ?
Transantral, endoscopically guided balloon dilation of the local ostiomeatal complex for chronic rhinosinusitis under local anesthesia" Am J Rhinol Allergy 2009; 23 (3): 321-7.
In addition, the CT scan showed a well-pneumatized uncinate process on the left side that appeared to be obstructing the outflow tract in the left ostiomeatal complex (figure, A).
Computed tomography (CT) of the facial bones revealed extensive opacification throughout the left ostiomeatal complex, the middle and anterior left nasal air cavity, and the anterior portions of the ethmoid sinuses; the opacification extended to the level of the nares (figure 1).
There was no purulent drainage from the ostiomeatal complex, and the mucosa was otherwise normal.
Noncontrast computed tomography (CT) of the paranasal sinuses revealed mucosal hypertrophy blocking the right ostiomeatal complex, thickened ala and lateral wall of the right nasal cavity, and thickened subcutaneous tissue in the malar region (figure 2).
The posterior lobe more closely crowded the uncinate process and potentially narrowed the ostiomeatal complex.
Computed tomography (CT) of the paranasal sinuses demonstrated the smooth, spherical lesion arising from the right middle turbinate and obstructing the right ostiomeatal complex (figure 1).