Cancer of the paranasal sinus and nasal cavity. Definition

Medical Definition: Cancer of the paranasal sinus and nasal cavity

Cancer that forms in tissues of the sinuses (small hollow spaces in the bones surrounding the nose, including the bottom of the forehead, cheeks and around and behind the nose) or nasal cavity (inside the nose from the nostrils to the throat from the nose and windpipe). The most common type of cancer is squamous cell carcinoma (cancer that begins in flat cells lining the sinus and nasal cavity).

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