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Ependymoma arising from the third ventriclemimicking optic neuritis in adog

机译:室管膜瘤起源于第三在adog ventriclemimicking视神经炎

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Neurological examination of a 4.5-year-old femaleneutered labrador retriever was consistent with a lesionin the subcortical visual pathway (mainly affectingthe left retina or optic nerve, and less likely the opticchiasm or right optic tract). Ophthalmic examinationwas unremarkable. MRI revealed enlargement ofthe left optic nerve and optic chiasm. A presumptivediagnosis of immune-mediated optic neuritis was madeand immunosuppressive therapy was commenced.The dog re-presented 14 days later due to progressivedeterioration and generalised seizure activity, and waseuthanased. Postmortem examination revealed ananaplastic ependymoma extending from the rostralthalamus along the left optic nerve. Ependymoma cantherefore mimic an optic neuropathy, such as immunemediatedoptic neuritis, and should be considered as adifferential diagnosis.
机译:神经系统检查的4.5岁femaleneutered拉布拉多寻回犬是一致的lesionin视觉皮层下通路(主要是affectingthe左视网膜和视神经,和不太可能opticchiasm或视神经束)。MRI显示扩大左视神经和视交叉。免疫介导性视神经炎是madeand免疫抑制治疗开始。重新提出14天后由于progressivedeterioration和全面发作活动,waseuthanased。检查发现ananaplastic室管膜瘤从rostralthalamus沿着左边视神经。视神经病变,如immunemediatedoptic神经炎,应考虑adifferential诊断。

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