von Brevern M, Lempert T, Bronstein A M, Kocen R
MRC Human Movement and Balance Unit, National Hospital for Neurology and Neurosurgery, London, UK.
Ann Neurol. 1997 Jul;42(1):117-20. doi: 10.1002/ana.410420119.
We report a patient with neurosarcoidosis who developed bilateral benign paroxysmal positional vertigo (BPPV) of the posterior canals, deafness, and absent responses to conventional caloric and rotational vestibular testing. Additional rotation in the planes of the vertical semicircular canals revealed relative sparing of vertical canal function. This vertical-horizontal canal dissociation explains the presence of BPPV and suggests that the vestibular damage in this patient is secondary to a vasculitic neuropathy.
我们报告了一名患有神经结节病的患者，该患者出现双侧后半规管良性阵发性位置性眩晕（BPPV）、耳聋，并且对传统冷热试验和旋转前庭测试无反应。在垂直半规管平面进行额外旋转显示垂直半规管功能相对保留。这种垂直-水平半规管分离现象解释了BPPV的存在，并提示该患者的前庭损伤继发于血管炎性神经病变。
