Neurology病例:亚急性小脑性共济失调的齿状核征:甲硝唑神经毒性

2020-04-26 zyx 神经科病例撷英拾粹

79岁女性,在腹主动脉动脉瘤修补术后出现感染性主动脉周炎。

79岁女性,在腹主动脉动脉瘤修补术后出现感染性主动脉周炎。1月后,患者表现为眩晕,构音障碍和步态不稳,进行性加重发展为无法站立,痛性感觉异常和定向障碍。查体提示辩距不良,轮替运动障碍,运动障碍和严重的小脑性共济失调。患者行大量的实验室检查,包括自身免疫和副肿瘤相关的内容。T2WI和FLAIR上明显的齿状核高信号被忽略(图)。在停用甲硝唑后15天,小脑综合征和齿状核异常信号好转。除了脑病和多发性神经病外,甲硝唑还可通过选择性地累及齿状核导致亚急性小脑性共济失调。认识这种影像学特点可识别可逆的医源性并发症,并避免不必要的检查。

(图:A:服用甲硝唑1月后,FLAIR可见双侧齿状核对称高信号;B:停用甲硝唑后15天,齿状核信号恢复正常)

原始出处:Jiménez MT, Gándara PS, Espay AJ. Teaching NeuroImages: The dentate sign in subacute cerebellar ataxia: Metronidazoleneurotoxicity. Neurology. 2020 Feb 25;94(8):e878-e879.

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    2023-04-20 侠胆医心 来自香港
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    2021-01-18 yinhl1978
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    2020-04-27 whmdzju
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