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.
According to Nader Sadeghi, MD, director of head and neck surgery at George Washington University in Washington, D.C, many symptoms of nasal cavity and paranasal sinus cancer are similar to those of the common cold.