The area identified to be at highest risk for events involved in disruption of mucociliary clearance was the narrow mucosal lined channels of the ethmoid air cell system and middle meatal region.

Anterior Ethmoidal Artery (AEA): An artery that supplies blood to the anterior part of the ethmoid bone and surrounding structures, important in sinus surgery. Computed Tomography (CT): An imaging ...

Functional endoscopic sinus surgery (FESS) was introduced to the ... to the anatomic and pathologic detail of the anterior ethmoid, middle meatus, and middle turbinate region (collectively called ...