Optic Nerve Sheath Melanoma Presenting as a Central Retinal Vein Occlusion.

A 64-year-old woman, with a history of diabetes and melanoma, developed a central retinal vein occlusion (CRVO) in her left eye. On exam, she had severe disc edema with retinal nerve fiber layer thickening, and anterior deformation of the peripapillary retinal pigment epithelium (RPE)/Bruch membrane layer (ppRPE/BM) toward the vitreous on spectral domain optical coherence tomography (SD-OCT) suggesting an optic nerve sheath (ONS) meningioma. Magnetic resonance imaging findings and ONS biopsy later confirmed a metastatic melanoma. This case demonstrates that the shape of the RPE/BM on SD-OCT may aid in the decision to consider imaging in patients with isolated CRVO. (C) 2015 by North American Neuro-Ophthalmology Society

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