

The 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.
| By | Healthwise Staff |
| Primary Medical Reviewer | Adam Husney, MD - Family Medicine |
| Specialist Medical Reviewer | Donald R. Mintz, MD - Otolaryngology |
| Last Revised | November 7, 2011 |