高频超声在甲状腺癌诊断中的应用价值

Value of diagnosis of thyroid carcinoma by high frequency ultrusonography

目的探讨高频超声在甲状腺癌诊断中的应用价值,提高甲状腺癌的诊断率。方法对59例(62个癌结节)甲状腺癌患者术前彩色多普勒超声图像进行回顾性分析。结果 62个癌结节超声诊断符合率64.5%(40/62),漏误诊率35.5%(22/62);声像图显示低回声者占88.7%,边界不清占77.4%,伴微小钙化占53.2%,血供丰富占62.9%,血流阻力指数(RI)≥0.75占59.7%,淋巴转移占19.4%。结论甲状腺癌声像图在临床诊断中具有一定特异性,低回声、边界不清、簇集微小钙化、血流RI增高及颈部淋巴结异常肿大伴钙化为甲状腺癌的重要诊断依据。

Objective To evaluate the value of high frequency ultrasound in the diagnosis of thyroid carcinoma,and to improve its diagnosis rate.Methods The date of preoperative diagnosis by ultrasonography on 59 patients with thyroid cancer（62 thyroid nodules） confirmed by pathological examination and following surgical procedures,were retrospectively reviewed.Results The review of 62 preoperative ultrasonographic cases confirmed correct diagnosis in 40 cases（64.5%）and incorrect diagnosis in 22 cases（35.5%）.The main ultrasonographic characteristics of thyroid cancer：low echo tubercle（88.7%）,ill-defined boundaries（77.4%）,with microcalcification（53.2%）,RI≥0.75（59.7%）,with metastatic cervical lymphnodes（19.4%）.Conclusion The imaging features of thyroid carcinoma have certain specificity.The supersonic inspection is helpful to improve the correct rate of diagnosing thyroid carcinoma with the imaging characteristics：low echo tubercle,ill-defined boundaries,microcalcification,RI0.75,metastatic cervical lymph nodes especially those with microcalcification.