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Clinical Note |

Onodi Cell Mucocele Rare Cause of Optic Compressive Neuropathy

Song-Tar Toh, MBBS(S’pore), MRCSEd, MMED(ORL); Julian C. Y. Lee, MBBS(S’pore), FRCS(Edin), FRCS(Glasg), FAMS(ORL)
Arch Otolaryngol Head Neck Surg. 2007;133(11):1153-1156. doi:10.1001/archotol.133.11.1153.
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Mucoceles of the posterior ethmoidal and sphenoidal sinuses are rare. Onodi cell mucoceles that cause compressive optic neuropathy are even rarer. We discuss the clinical presentation, radiologic features, and treatment in 2 cases of Onodi cell mucoceles in which the patients presented with loss of vision due to compressive optic neuropathy. These 2 cases demonstrate the importance of interdisciplinary cooperation between the ophthalmologists and otorhinolaryngologists, as prompt medical and surgical intervention can result in the return of vision in this uncommon but treatable condition.

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Figure 1.

Endoscopic picture of an Onodi cell with an optic canal bulge (arrow).

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Figure 2.

Coronal computed tomogram of the paranasal sinus showing an Onodi cell mucocele (O) and the position of the optic nerve (arrow).

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Figure 3.

Characteristic T1-weighted coronal magnetic resonance image with contrast of the paranasal sinus showing a well-defined Onodi cell mucocele (O) with peripheral enhancement and central low signal intensity.

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Figure 4.

Endoscopic view of an Onodi cell after evacuation of the mucocele showing an optic canal bulge (arrow).

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