A variety of inflammatory and structural conditions can cause frontal sinusitis. The present study was conducted as pilot study to determine the primary cause of frontal sinusitis at the time of endoscopic sinus surgery.
Division of Rhinology and Endoscopic Sinusand Skull-base Surgery, Department of Otolaryngology and Head and Neck Surgery, Eastern Virginia Medical School, Norfolk, VA 23507, USA. hanjk@evms.edu
