====== Paranasal sinus ======

Paranasal [[sinus]]es are a group of four paired air-filled spaces that surround the nasal cavity. 

The [[maxillary sinus]]es are located under the [[eye]]s; the [[frontal sinus]]es are above the eyes; the [[ethmoidal sinus]]es are between the eyes and the [[sphenoidal sinus]]es are behind the eyes. 

The sinuses are named for the facial bones in which they are located.

see [[Paranasal sinus osteoma]]