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目的探讨慢性中耳乳突炎的HRCT特征及诊断。方法回顾性分析76例慢性中耳乳突炎患者的临床和HRCT检查资料,并与手术病理结果对照。结果HRCT能清楚显示外耳、中耳及内耳结构。术前诊断单纯型36耳,胆脂瘤型30耳,肉芽肿型10耳。40耳诊断为胆脂瘤型和肉芽肿型患者均行手术治疗,术前诊断为胆脂瘤型30耳,术后5耳病理证实为肉芽肿型。10耳肉芽肿型术后证实有3耳为胆脂瘤型。结论由于HRCT能清晰显示颞骨结构,对慢性中耳乳突炎性病变发现及定位较准确,对胆脂瘤型和肉芽肿型的鉴别诊断仍有一定困难。
Objective To investigate the HRCT features and diagnosis of chronic otitis media. Methods A retrospective analysis of 76 cases of chronic otitis media in patients with clinical and HRCT examination data and surgical pathology results. HRCT can clearly show the outer ear, middle ear and inner ear structure. Preoperative diagnosis of simple 36 ears, cholesteatoma 30 ears, granuloma 10 ears. Forty cases of ear cholesteatoma and granuloma were diagnosed as cholesteatoma by preoperative diagnosis. Fifty cases of cholesteatoma were diagnosed preoperatively, and 5 cases were confirmed as granuloma. 10 ear granuloma confirmed 3 ears were cholesteatoma type. Conclusion HRCT can clearly show the structure of the temporal bone. It is difficult to differentiate the diagnosis of cholesteatoma and granuloma in the diagnosis and identification of chronic otitis media.