USG和增强CT对甲状腺癌与中央区淋巴结转移的研究

Study of ultrasonography and contrast-enhanced computer tomography in the diagnosis of thyroid carcinoma and lymph node metastasis

目的评价USG和增强CT对甲状腺癌和中央区淋巴结转移的诊断价值。方法回顾性分析首都医科大学附属北京友谊医院2009年11月-2011年11月收治的73例甲状腺癌患者临床资料。73例患者术前均行USG和增强CT检查，均行甲状腺癌根治术，包含中央区淋巴结清扫，对比术后病理结果。结果USG和增强CT诊断结果与病理结果进行对比分析。USG诊断甲状腺癌的准确率为69．9％，增强CT为80．8％，两者差异无统计学意义（P=0．077）。USG诊断中央区颈部淋巴结转移的准确率为61．6％，阳性预测率为64．0％，阴性预测率为60．4％；增强CT诊断中央区颈部淋巴结转移的准确率为67．1％，阳性预测率为61．7％，阴性预测率为76．9％。2种检查方法差异均无统计学意义（P=0．848，P=0．152，P=0．489）。结论USG与增强CT检查对定性诊断甲状腺癌及评估中央区颈部淋巴结转移差异无统计学意义。

Objective To evaluate the diagnostic value of uhrasonography （USG） and contrast-enhanced computer tomography （CT） for thyroid carcinoma. Methods The results of the review of the preoperative CT and those of the original US reports were compared with the histopathologic results in 73 cases of thyroid carcinoma who underwent radical operation and central compartment dissection from November 2009 to November 2011. Results The final diagnostic rate of thyroid carcinoma with USG was 69.9% , CT of that was 80.8%. There were no significant difference between them （ P = 0. 077）. The diagnostic rate of metastatic lymph node in the central compartment with USG was 61.6% , positive predictive value was 64. 0% ,negative predictive value was 60.4%. The diagnostic rate of metastatic lymph node in the central compartment with CT was 67. 1%, positive predictive value was 61.7%, negative predictive value was 76. 9%. There were not significant difference between them（P = 0.848, P = 0. 152, P = 0.489）. Conclusion There was no significant difference between USG and CT in The final diagnostic rate of thyroid carcinoma and its lymph node metastasis in the central compartment.