[Big osteoma of ethmoid sinus]

Area of Science:

• Otolaryngology
• Neurosurgery
• Ophthalmology

Background:

• Sinus osteomas are common, but those exceeding 30mm are exceptionally rare.
• This case highlights a large ethmoid osteoma presenting with significant orbital and visual symptoms.

Observation:

• A 39-year-old male presented with a year of right eye swelling, pain, proptosis, reduced vision (hypopsia), and double vision (diplopia).
• CT imaging revealed a large ethmoid osteoma compressing the medial rectus muscle and orbital apex.

Findings:

• The ethmoid osteoma extended from the anterior skull base to the superior and inferior orbital walls.
• Complete surgical resection was not feasible due to the tumor's extensive invasion.

Implications:

• Large osteomas pose significant surgical challenges and risks of complications.
• Partial resection aimed to alleviate symptoms and prevent further complications in this rare presentation.