Sphenoid sinus Sinuses are air-filled sacs (empty spaces) on either side of the nasal cavity that filter and clean the air breathed through the nose and lighten the bones of the skull.

Kimberly P. Cockerham, MD, who presented data on 69 patients treated with and without radiation for sphenoid wing meningiomas, noted that the tumor has a particularly high recurrence rate because ...

The sphenoid sinuses, specifically, are known to cause neck pain if they become infected. A sphenoid sinus infection can also cause ear pain and headaches.

This X-ray of a human skull highlights the main nasal cavity (orange) and the sinuses: frontal (pink), ethmoid (yellow), maxillary (green) and sphenoid (purple). Asian apes do not have frontal or ...