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Cold, Flu, and Sinus:Risks and Symptoms

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Cold, Flu, and Sinus

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What Are Sinuses?

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Picture of the location of facial sinuses

Facial sinuses.

Picture of facial sinus cavities

Nasal sinus cavities are moist, hollow spaces in the bones around your eyes, cheeks, and nose. They are connected to the nasal passages through narrow openings. They protect your airways by trapping irritants that you inhale.

Last Updated: January 15, 2009
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Last Updated: August 15, 2008
Medical Review:
Kathleen Romito, MD - Family Medicine

Donald R. Mintz, MD - Otolaryngology


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