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  • Title: Optic neuropathy produced by a compressed mucocele in an Onodi cell.
    Author: Kitagawa K, Hayasaka S, Shimizu K, Nagaki Y.
    Journal: Am J Ophthalmol; 2003 Feb; 135(2):253-4. PubMed ID: 12566044.
    Abstract:
    PURPOSE: To describe a patient with compressive optic neuropathy caused by a mucocele in an Onodi cell. DESIGN: Interventional case report. METHODS: 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. RESULTS: After endoscopic microsurgery of the paranasal sinus, visual acuity in the left eye improved. Histopathological examination of the excised specimen showed a mucocele. CONCLUSIONS: 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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