Giant Ethmoid Osteoma With Orbital Extension, a Nasoendoscopic Approach Using an Intranasal Drill

Objective Ethmoid osteoma is a slow‐growing, benign, and encapsulated bony tumor. Symptoms occur earlier than with osteomas of the frontal sinus because of the small volume of the ethmoid sinus. Interestingly, orbital extension is uncommon. Treatment remains controversial, with open procedures typically being used. In this article, we present a less invasive yet safe and effective approach to treatment.