Objective

Hemifacial spasm (HFS) is usually caused by compression of the facial nerve at the root exit zone (REZ), and is extremely rare in adolescents and even rarer in aneurysm compression.

Case report

We describe symptomatic hemifacial spasm caused by a saccular aneurysm of the anterior inferior cerebellar artery (AICA) that was treated by clipping. A 17-year-old adolescent developed left hemifacial spasm that had gradually worsened over a period of 1 year before admission to our department. During the course of MVD (microvascular decompression), saccular aneurysm of AICA was accidentally found to compress the facial nerve. The cause of the facial spasm was considered to be compression of the left facial nerve by the aneurysm. Clipping the aneurysm was performed. The hemifacial spasm disappeared immediately.

Conclusion

Our report indicates that HFS caused by saccular aneurysm of AICA can be treated by clipping, and that aneurysms should be considered in the treatment of adolescent HFS, especially those difficult to identify on imaging examination.

中文翻译：

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青少年小脑前下动脉瘤面肌痉挛成功治疗一例并文献复习[J].

客观的

面肌痉挛（HFS）通常由根出口区（REZ）的面神经受压引起，在青少年中极为罕见，在动脉瘤受压中更罕见。

案例报告

我们描述了通过夹闭治疗的小脑前下动脉 (AICA) 囊状动脉瘤引起的症状性面肌痉挛。一名 17 岁青少年出现左侧面肌痉挛，在入院前 1 年逐渐恶化。MVD（微血管减压术）过程中，意外发现AICA囊状动脉瘤压迫面神经。面部痉挛的原因被认为是动脉瘤压迫左侧面神经。进行了动脉瘤夹闭。面颊痉挛立即消失。

结论

我们的报告表明AICA囊状动脉瘤引起的HFS可以通过夹闭治疗，在治疗青少年HFS时应考虑动脉瘤，尤其是影像学检查难以识别的动脉瘤。