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.
The symptoms of sinus problems can vary widely depending on the type and severity of each patientâs condition, but often significantly affect a patientâs quality of life. 1  Common symptoms include: 2  Facial pain and pressure. 3  Mucous discharge. 4  Nasal obstruction. 5  Fever. 6  Headache. 7  Congestion. 8  Vision disturbances.