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Maxillary Sinus

Glossary

maxillary sinus

A type of paranasal sinus (a hollow space in the bones around the nose). There are two large maxillary sinuses, one in each of the maxillary bones, which are in the cheek area next to the nose. The maxillary sinuses are lined with cells that make mucus to keep the nose from drying out.

Last updated: 2014-05-21

Source: The National Cancer Institute's Dictionary of Cancer Terms (http://www.cancer.gov/dictionary)