Primary Paranasal Sinus Cysts; A Report of Four Cases

Abstract

We rarely encounter primary paranasal sinus cysts in clinical practice. Recently, we treated 2cases of primary cysts of the frontal and ethmoidal sinuses and 2 cases of anterior ethmoid sinus cysts over a relatively short time span. The cases are presented along with a review of the literature.
For diagnosis, CT examination was very useful. MRI examination is an effective diagnostic tool when the cyst invades the intraorbital or intracranial space or for differentiating cystic mass from tumor.
Surgery is the primary therapeutic modality. Early surgery is highly recommended in patients with complications.