Radon comes from the radioactive breakdown of naturally occurring radium found in most Florida soils, and in most earthen material used in the building process. In the vast majority of buildings with radon problems, the largest source of radon is soil gas entering the building through small openings in the foundation.
Symptoms of nasal cavity cancer and paranasal sinus cancer include chronic congestion, recurring infections of the sinuses, headaches and recurring nosebleeds, according to Cancer.net.
Chronic sinusitis Chronic sinusitis can be caused by an infection, growths in the sinuses (nasal polyps) or by a deviated septum. Signs and symptoms may include nasal obstruction or congestion that causes difficulty breathing through your nose, and pain and swelling around your eyes, cheeks, nose or forehead.