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.
1 Swelling around the eye or the nose can be a later sign of sinus or nasal cavity cancer. Sometimes swelling will be seen on the roof of the mouth. 2  Eye symptoms. Double vision, persistent tearing, or bulging of the eye are all serious warning signs.  Lump in the neck.
Symptoms of Benign Sinonasal Tumors. The symptoms of benign sinonasal tumors depend on where the tumor is and what type of tumor it is. Nasal cavity: Usually just one side of the nasal cavity is affected. Symptoms may include mucous discharge, crusting within the nose, nosebleeds, and nasal obstruction.