Abstract
The circumference of the sphenoidal sinuses encloses important structures such as the base of the skull, optic nerve, and cavernous sinus. For this reason, spread of inflammation can cause severe symptoms in those structures. One sphenoiditis case presented several symptoms including raging headache, vomiting, and diplopia because antibiotic treatment had been insufficient, and finally an extradural abscess had formed. We performed endoscopic sinus surgery to open the sphenoid sinuses, and the symptoms were successfully resolved. It is concluded that extradural abscess was effectively treated by sinus drainage in this case.
