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岩尖部疾患很少见,其症状和体征与咽鼓管阻塞、脑神经及颈动脉受压和颅底破坏有关,一般不累及骨迷路。但当肿物增大时偶可侵犯内耳道。本文报告一例原发性岩尖部胆固醇肉芽肿侵蚀内耳道致出现耳蜗前庭积水的症状。患者31岁,主诉左耳波动性听力下降、耳鸣、耳压迫感和发作性眩晕伴恶心呕吐约半年,检查除昂白氏征轻度异常外,脑神经,头颈部均正常。左耳听力呈轻度低频与高频感觉神经性聋,语言频率听敏度正常,语言识别率亦正常,但噪声语言识别率下降;镫骨肌反射衰减试验刺激左侧时同侧和对侧潜伏期均异常;AEP(听觉诱发电位)示异常波形
Rock tip disease is rare, its symptoms and signs and Eustachian tube obstruction, cranial nerve and carotid artery compression and skull base damage, generally do not involve the bone lost. However, when the tumor may even infringe the internal auditory canal. This article reports a case of primary petrous apex granuloma of the ear erosion of the ear canal caused by symptoms of cochlear vestibular hydrocephalus. 31-year-old patient complained of left ear volatility hearing loss, tinnitus, ear pressure and episodes of vertigo with nausea and vomiting for about six months, check Exon white sign slight abnormalities, the brain, head and neck were normal. Left ear hearing was mild low-frequency and high-frequency sensory nerve deafness, hearing frequency of language frequency was normal, the speech recognition rate was normal, but the noise rate of speech recognition decreased; tarsal muscle reflex attenuation test to stimulate the left side of the ipsilateral and contralateral Latency were abnormal; AEP (auditory evoked potentials) showed abnormal waveforms