Neurology:大脑后动脉压迫动眼神经伴瞳孔保留

2020-04-25 zyx 神经科病例撷英拾粹

54岁女性,表现为逐渐加重的左侧眼睑下垂30年。

54岁女性,表现为逐渐加重的左侧眼睑下垂30年。神经眼科检查提示左侧眼睑下垂,上提不能,眼球上转受限以及左眼下斜视,瞳孔正常不伴复视。脑/眼眶MRI可见左侧上直肌轻微萎缩(图1A-B),未见眼眶病变。可见大脑后动脉(PCA)从上压迫左侧动眼神经(图1C–E)。考虑到池间隙中动眼神经的微观解剖结构,PCA血管罕见地选择性压迫上外侧动眼神经(图2),而上内侧副交感神经分支不受累。

(图1:A-B:左侧上直肌孤立非对称性萎缩;C:左侧大脑后动脉[箭]从上压迫左侧动眼神经[箭头];D-E:左侧大脑后动脉[箭]压迫使得左侧动眼神经[箭头]不对称变扁)

(图2:动眼神经显微解剖图[未按比例绘制])

原始出处:Li A, Tandon A, Tsiouris AJ, Dinkin MJ, Oliveira C. Teaching NeuroImages: Pupil-sparing compression of oculomotor nerve by posterior cerebralartery vessel. Neurology. 2020 Mar 31;94(13):e1450-e1451.

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    2021-04-08 yinhl1978
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    2020-04-26 小几洁

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