Sinusitis
Sinusitis refers to inflammation of the sinus cavities, which are moist, hollow spaces in the bones of the skull. There are four pairs of sinuses: - Frontal sinuses
- Maxillary sinuses
- Ethmoid sinuses
- Sphenoid sinuses (not shown in illustration)
If the opening from a sinus cavity becomes plugged, the flow of mucus is blocked and pressure builds up, causing pain and inflammation.
Related Images
Chronic Sinusitis Sinuses
Related Articles
Sinusitis Sinusitis - Chronic
Review Date : 7/3/2002
Reviewed By : A.D.A.M. Medical Illustration Team
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