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目的 探讨HRCT对慢性中耳炎继发面神经管破坏的诊断价值。资料与方法 搜集经手术证实为慢性中耳炎并伴有面神经管破坏患者 18例 ,回顾性分析其HRCT检查的影像及临床资料 ,着重研究其HRCT表现 ,并与临床手术结果对比。结果 18例均有不同程度的面神经管骨质破坏 ,破坏部位以面神经管迷路段及鼓室段为主15例 (83.3%) ,破坏原因主要为胆脂瘤性中耳炎 (14例 ) ,占 77.8%。面神经管破坏大部分合并面神经损伤而导致面瘫 (14例 )。HRCT主要表现为面神经管骨质模糊、缺损、破坏。结论 HRCT能准确诊断慢性中耳炎继发面神经管破坏 ,对临床手术有重要指导意义。
Objective To investigate the diagnostic value of HRCT in the destruction of secondary facial nerve canal of chronic otitis media. Materials and Methods Eighteen patients with chronic otitis media with facial nerve canal destruction were surgically collected. The images and clinical data of HRCT examination were retrospectively analyzed. Their HRCT findings were studied and compared with the clinical results. Results All 18 cases had facial bone destruction of facial nerve with 15.3% (83.3%) of the patients with facial nerve tube labyrinth and tympanic segment. The main causes of the destruction were cholesteatoma otitis media (14 cases), accounting for 77.8% . Facial nerve canal destruction most facial nerve injury and facial paralysis (14 cases). HRCT mainly manifested as facial nerve tube fuzzy, defect, destruction. Conclusion HRCT can accurately diagnose the destruction of the secondary facial nerve canal of chronic otitis media, which has important guiding significance for clinical operation.