CT scans demonstrating (A) (click here to zoom) disease in the maxillary and ethmoid ... sinus surgery. When performing FESS however, knowledge of the nasal and sinus cavity anatomy, as well ...

They typically start when viruses, bacteria, or sometimes fungi invade the sinus cavities. These microorganisms set up shop in your sinuses, triggering inflammation that blocks the normal drainage ...

A sinus infection is inflammation of the sinuses, which are the air spaces around your nose, eyes, cheeks, and forehead. It is also called sinusitis. When the sinuses are inflamed, drainage is blocked ...

The Onodi cell is the most posterior ethmoidal cell that pneumatises laterally and superiorly to the sphenoid sinus.1 The optic nerve runs close to the small cavity of the Onodi cell. A mucocele is a ...