超声、CT对颈动脉体瘤的诊断价值

Value of ultrasound and CT in diagnosis of carotid body tumor

目的探讨超声、cT对颈动脉体瘤的诊断价值。方法收集可疑颈动脉体瘤，行超声及CT检查，并最终通过手术及病理明确诊断的20例患者。总结颈动脉体瘤的超声、CT特征，并比较分析二者诊断颈动脉体瘤的差异。结果CT、超声及二者联合诊断颈动脉体瘤的敏感性分别为93．3％、80％、93．3％，特异性分别为100％、40％、100％，阳性预测值分别为100％、80％、100％，阴性预测值分别为83．3％、40％、83．3％，诊断准确性分别为90％、70％、90％，误诊率分别为10％、30％、10％。CT、超声诊断颈动脉体瘤的敏感性、特异性及准确性比较差异均未见统计学意义（P〉0．05）。结论超声、CT均可敏感地发现颈动脉体瘤，且诊断准确率无明显差异。超声以价廉、无辐射等优势，可作为首选影像检查方法。

Objective To investigate the value of ultrasound and CT in the diagnosis of carotid body tumor. Methods Twenty cases of suspected carotid body tumors were examined by ultrasound and CT, and finally diagnosed by operation and pathology. The ultrasonographic and CT characteristics of ca- rotid body tumor were summarized, and the difference between the two methods of carotid body tumor was compared and analyzed. Results The sensitivity of diagnosis of CT, ultrasound and combination of the two methods were 93.3%, 80%, 93.3%, the specificity was 100%, 40%, 100%, the positive predic- tive value were 100% , 80% , 100% , and negative predictive value were 83.3% , 40% , 83.3% , diag- nosis accuracy were 90% , 70% , 90%. The misdiagnosis rate was 10% , 30% , 10%. The sensitivity, specificity and accuracy of CT and Ultrasound in the diagnosis of carotid bady tumenr had no significant difference （P 〉 0. 05 ）. Conclusions Ultrasound and CT can detect carotid body tumor sensitively, andthe diagnostic accuracy is not significant. Uhrasound can be used as the preferred imaging examination method because of its advantages such as low cost and no radiation.