Optic neuropathy produced by a compressed mucocele in an Onodi cell.

Kitagawa, Kiyotaka; Hayasaka, Seiji; Shimizu, Katsutoshi; Nagaki, Yasunori · Am J Ophthalmol · 2003

case_report · Level V

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Abstract

To describe a patient with compressive optic neuropathy caused by a mucocele in an Onodi cell. Interventional case report. A 73-year-old man complained of sudden visual loss in the left eye 10 days after cataract surgery. Coronal computed tomography showed a homogeneous mass in an Onodi cell. Magnetic resonance imaging revealed an oval-shaped lesion that compressed the left optic nerve. After endoscopic microsurgery of the paranasal sinus, visual acuity in the left eye improved. Histopathological examination of the excised specimen showed a mucocele. Ophthalmologists should be aware that the mucocele in the Onodi cell, an anatomical variation of the paranasal sinus, may compress the optic nerve.

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