A Case of Superior Orbital Subperiosteal Abscess Secondary to a Paranasal Sinus Mucocele: Drainage Using a Combined Endoscopic and External Approach

1 ethmoidal sinus disease.Because the superior orbital compartment is anatomically confined, lesions in this location can cause severe pain, inferior displacement of the globe, and optic nerve compression early in the disease course.Superior orbital subperiosteal abscesses may therefore require more complex and aggressive surgical management than medial orbital subperiosteal abscesses.2,3) Paranasal sinus mucoceles result from mucus retention caused by chronic obstruction of the drainage pathway and gradually expand, eroding the surrounding bone.Mucoceles in the frontal and frontoethmoidal sinuses carry a particularly high risk of extension into the orbit or skull base.4,5) Although an infected mucocele rarely extends into the orbit and causes A Case of Superior Orbital Subperiosteal Abscess