Giant Ethmoid Sinus Osteoma Protruding into the Maxillary Sinus.

Ethmoid sinus osteomas are rare, benign, encapsulated neoplasms of the paranasal region. They can lead to various complications such as sinusitis, orbital cellulitis, proptosis, and diplopia. The treatment protocol of these lesions changed remarkably as powered instrumentation of functional endoscopic sinus surgery evolved and otolaryngologists gained experience. Here, the authors report a 30-year-old female who was diagnosed with a giant right-sided ethmoid sinus osteoma and discuss diagnostic and treatment modalities of these lesions in consonance with the current literature.