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在神经科学领域,对大脑导水管狭窄的报道并不罕见。作者通过对1例主诉为双侧耳鸣及步态不稳的14岁女性病例的分析,说明耳神经学检查对早期诊断导水管狭窄极为重要。大脑导水管狭窄可由多种病损引起,如肿瘤、炎症、外伤和先天畸形。临床表现根据病变范围不同,可有相当大的差异。但一般都有导水管狭窄及导水管周围受压而致脑积水、颅压升高及神经系统受累的表现。病变一般不影响听力及前庭系统外周部分。耳神经学脑干电反应(ABR)检查示Ⅰ～Ⅴ波各波潜伏期均延长,但阈值及波幅无异常。说明听觉通路从初级神经元至下丘全部受影响(这可能与脑积水时神经放电不同步有关)。本
In the field of neuroscience, reports of cerebral aqueduct stenosis are not uncommon. The authors analyzed a case of 14-year-old female complained of bilateral tinnitus and unsteady gait, indicating that otological examination is very important for the early diagnosis of the narrowing of the aqueduct. Cerebral aqueduct stenosis can be caused by a variety of lesions, such as tumors, inflammation, trauma and congenital malformations. According to the clinical manifestations of different ranges, there may be considerable differences. However, there are generally narrow aqueduct and aqueduct around the pressure caused by hydrocephalus, increased intracranial pressure and nervous system involvement. Lesions generally do not affect the hearing and the peripheral part of the vestibular system. Otology neurological brainstem response (ABR) showed Ⅰ ~ Ⅴ wave wave latency were prolonged, but the threshold and amplitude were normal. Explain the auditory pathway from the primary neuron to the inferior colliculus affected (this may be related to neurological discharges when hydrocephalus). this