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  • Title: [Characteristics and differential diagnosis of middle ear cholesteatoma and chronic suppurative otitis media with wideband acoustic immittance].
    Author: Xu J, Jiang W, Liu J, Wang H, Zhao Z, Liu W, Li W.
    Journal: Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi; 2022 May; 36(5):376-381. PubMed ID: 35483690.
    Abstract:
    Objective:Through analysis of the sound energy absorbance of wideband acoustic immittance to provide a basis for differential diagnosis of adult acquired secondary cholesteatoma of the middle ear and patients with chronic suppurative otitis media（CSOM）. Methods:38 cases of cholesteatoma and 40 cases of CSOM admitted to the Department of Otolaryngology, Affiliated Hospital of Xuzhou Medical University from September 2020 to December 2021 were selected as the research group, and 30 cases （60 ears） of normal adults were selected as the control group. A total of 16 frequency points were selected, and the energy absorbance of wideband acoustic immittance was taken as the research parameter. The characteristics of energy absorbance under ambient pressure among the three are compared. Then the ROC in the cholesteatoma group was drawn, and by calculating the AUC, the Cut-off values and the corresponding sensitivity and specificity were found. Results:The energy absorbance in CSOM group at 1100-5700 Hz and the cholesteatoma group at 560-5700 Hz was lower than that in the control group, and the difference in some frequency bands was statistically significant. The energy absorbance in the cholesteatoma group at 226-7100 Hz was lower than that in the CSOM group, and the difference between the two groups in many frequency points was statistically significant. The ROC in the research group was drawn and it was found that the AUC in the 560, 710, 890, and 4500 bands was > 0.5, and in the other bands was > 0.7（P<0.05）. The AUC in the 2800 Hz was the largest （0.78）, the Cut-off value was 0.31, the corresponding sensitivity was 78.38%, specificity was 73.33%. Conclusion:Wideband acoustic immittance can be used as an auxiliary method for the differential diagnosis of adult-acquired secondary cholesteatoma of the middle ear and chronic suppurative otitis media in adults. 目的：分析成人后天继发性中耳胆脂瘤和慢性化脓性中耳炎（CSOM）患者宽频声导抗的声能吸收率曲线，为二者的鉴别诊断提供依据。 方法：以2020年9月—2021年12月徐州医科大学附属医院耳鼻咽喉科收治的38例后天继发性中耳胆脂瘤患者与40例CSOM患者为研究组，以30例（60耳）正常成人为对照组。选取16个频率点，以声能吸收率作为研究参数，比较三组在环境压下的宽频声能吸收率曲线特点，然后绘制研究组受试者工作特征曲线，计算曲线下面积及各频段下的诊断临界值与对应的灵敏度与特异度。 结果：CSOM组在1100~5700 Hz、胆脂瘤组在560~5700 Hz间声能吸收率较对照组降低，部分频段差异有统计学意义；胆脂瘤组在226~7100 Hz频段吸收率低于CSOM组，在多个频段两者差异有统计学意义。研究组受试者工作特征曲线显示在560、710、890、4500 Hz频段曲线下面积>0.5，其余频段曲线下面积>0.7，P<0.05；在2800 Hz频段曲线下面积最大，为0.78，此时的诊断临界值为0.31，对应的灵敏度为78.38%，特异度为73.33%。 结论：宽频声导抗可作为成人后天继发性中耳胆脂瘤与CSOM鉴别诊断的辅助方法。.
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