Understanding Sinus Cancer Sinus cancer or paranasal sinus and nasal cavity cancer is a condition that results when mutated cells rapidly develop in the tissues of the paranasal sinuses and nasal cavity. Paranasal sinuses are air-filled,nike free laufschuhe, hollow spaces that allow you to carry the weight of your skull. The four pairs of paranasal sinuses are:
• Frontal sinuses above the nose.
• Maxillary sinuses on either side of the nose.
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