Department of Audiology and Otoneurological Evaluation - Lyon University Hospital, Lyon, France;Claude Bernard Lyon 1 University, Lyon, France;Paris Hearing Institute, Institut Pasteur, Paris, France.
Department of Audiology and Otoneurological Evaluation - Lyon University Hospital, Lyon, France;Paris Hearing Institute, Institut Pasteur, Paris, France.
J Int Adv Otol. 2020 Dec;16(3):485-488. doi: 10.5152/iao.2020.8554.
Hyperpneumatization of the temporal bone (HPTB) is a rare finding, and its clinical impact is poorly described in literature. We report the case of a 34-year-old woman with no previous otologic condition, complaining of paroxysmal vertigo and right pulsatile tinnitus shortly after a first scuba diving session. Clinical neurotologic assessment found a right vestibular impairment. Cranial tomodensitometry showed a bilateral hyperpneumatization of the petrosal air cell system. Brain magnetic resonance imaging to rule out any retrocochlear pathology was normal, although the cochleo-vestibular nerve (CVN) appeared to be over lengthened in a narrowed internal auditory canal (IAC), especially on the right-hand side. Pain was alleviated by administration of a low-dose anti-epileptic drug. The clinical, neurological, and radiological findings evoked a right vestibulopathy generated by a limited compression of the CVN; HPTB appeared to contribute to the narrowing of the IAC, especially on the right-hand side.
颞骨过度气化（HPTB）是一种罕见的发现，其在文献中的临床影响描述甚少。我们报告了一例 34 岁女性病例，该女性无先前的耳部疾病，在首次水肺潜水后不久出现阵发性眩晕和右侧搏动性耳鸣。临床神经耳科学评估发现右侧前庭功能障碍。颅 CT 显示双侧岩骨气房系统过度气化。为排除任何耳蜗后病变进行的脑磁共振成像正常，尽管蜗神经 - 前庭神经（CVN）在内耳道口（IAC）变窄时似乎过长，尤其是右侧。低剂量抗癫痫药物治疗缓解了疼痛。临床、神经和影像学检查结果提示右侧前庭病是由 CVN 有限压迫引起的；HPTB 似乎导致 IAC 变窄，尤其是右侧。
