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.
Multiple growths or a large polyp may block your nasal passages and sinuses. Common signs and symptoms of chronic sinusitis with nasal polyps include: A runny nose. Persistent stuffiness. Postnasal drip. Decreased or absent sense of smell. Loss of sense of taste. Facial pain or headache.