Kim Y, Tanaka A, Kimura M, Yoshinaga S, Tomonaga M
Department of Neurosurgery, Fukuoka University, Chikushi Hospital, Chikushino, Japan.
Neurol Med Chir (Tokyo). 1991 Feb;31(2):109-12. doi: 10.2176/nmc.31.109.
A 64-year-old female was admitted with a 6-year history of right hemifacial spasm. Neurological examination and precontrast computed tomographic (CT) scanning showed no abnormality. Vertebral angiography disclosed, however, a small arteriovenous malformation (AVM) in the right cerebellopontine angle. A postcontrast CT scan demonstrated a high-density area in the right cerebellomedullary junction which appeared as a flow-void signal on magnetic resonance images. A right retromastoid craniectomy was performed to separate an enlarged and tortuous loop of the right anterior inferior cerebellar artery from the right facial nerve using a Teflon-felt sheet. The AVM was not excised. Postoperatively, she was completely free of hemifacial spasm.
一名64岁女性因右侧面肌痉挛6年入院。神经系统检查和造影前计算机断层扫描（CT）均未发现异常。然而，椎动脉造影显示右侧桥小脑角有一个小的动静脉畸形（AVM）。造影后CT扫描显示右侧小脑延髓交界处有一个高密度区，在磁共振图像上表现为流空信号。行右侧乳突后颅骨切除术，用特氟纶毡片将右侧小脑下前动脉增粗且迂曲的袢与右侧面神经分离。未切除AVM。术后，她的面肌痉挛完全消失。
