桥脑梗死致急性单侧咬肌瘫痪。

Acute Unilateral Masseter Muscle Paralysis Caused by Pontine Infarction.

机构信息

Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea.

Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Neurology, Incheon St. Mary's Hospital, The Catholic University of Korea, 665 Bupyeong-6-dong, Bupyeong-gu, Incheon 403-720, South Korea.

出版信息

J Stroke Cerebrovasc Dis. 2021 Apr;30(4):105623. doi: 10.1016/j.jstrokecerebrovasdis.2021.105623. Epub 2021 Jan 22.

DOI:10.1016/j.jstrokecerebrovasdis.2021.105623

PMID:33486342

Abstract

In the present report, we discussed the case of a 57-year-old man with unilateral masticatory muscle weakness, nystagmus, skew deviation and facial hypesthesia due to pontine tegmental infarction. Trigeminal motor neuropathy attributed to brain infarction is very rare. Brain magnetic resonance imaging revealed a small dot-like infarction lesion in the pontine tegmentum. Masticatory muscle weakness was confirmed by an electrophysiological study performed on the day after admission in which there was an incomplete interference pattern without spontaneous denervation activity, suggesting that the patient's masseter muscle weakness was caused by an infarction of the trigeminal motor nucleus proper or trigeminal motor nerve fascicles rather than Wallerian degeneration of the trigeminal nerve or the progression of masseter muscle degeneration.

摘要

在本报告中，我们讨论了一例 57 岁男性患者，因桥脑被盖部梗死出现单侧咀嚼肌无力、眼球震颤、斜偏和面部感觉减退。由脑梗死引起的三叉运动神经病非常罕见。脑磁共振成像显示桥脑被盖部有一个小点状梗死病灶。咀嚼肌无力通过入院后第二天进行的电生理研究得到确认，结果显示存在不完全干扰模式，没有自发性去神经活动，提示患者的咬肌肌无力是由三叉运动核或三叉运动神经根束的梗死引起的，而不是三叉神经的瓦勒变性或咬肌变性进展所致。