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 ...

Patients commonly present with a history of nasal obstruction, polyposis, or a history of multiple sinus procedures. Nasal endoscopy reveals polyposis, allergic mucin, and thick, tenacious debris.