高频二维超声及彩色多普勒对甲状腺癌颈部淋巴结转移的诊断价值

目的]探讨高频二维超声及彩色多普勒对甲状腺癌颈部淋巴结转移的诊断价值.方法]回顾分析了2004～2006年经超声检查手术证实的检出淋巴结的甲状腺癌患者58例.二维及彩色多普勒超声对甲状腺癌患者淋巴结主要观察的指标:淋巴结的数目、纵横比、形态、边界、内部回声、有无微钙化、内部血流状态等.结果]58例患者病理共检出144枚淋巴结.病理诊断淋巴结转移的60枚,超声显示纵横比＜1.5的51枚(85.0%),淋巴结内部回声不均匀46枚(76.7%),淋巴结边界不规则43枚(71.7%),淋巴结内部有微钙化的21枚(35%).病理诊断非转移性淋巴结84枚,超声显示纵横比《1.5的10枚(11.9%),淋巴结内部回声不均匀的9枚(10.7%),淋巴结边界不规则的14枚(16.7%),淋巴结内部有微钙化的5枚(6.0%).转移和非转移淋巴结组间上述超声指标的差异均具有统计学意义(P＜0.05).转移淋巴结中血流分布较丰富,多普勒血流速度(PSV)和阻力指数(RJ)也高于非转移淋巴结(P＜0.05).结论]高频二维超声及彩色多普勒是诊断甲状腺癌颈部淋巴结转移的一种简便、有效的方法.

Ultrasonography diagnosis of thyroid carcinoma to cervical lymph nodes

Objective] To investigate the value of ultrasonography(US) in diagnosis of thyroid carcinoma to cercical lymph nodes.Methods] Fifty-eight patients with thyroid carcinoma to cervical lymph nodes were examined before thyroidectomy by US.The high-resolutionUS and the blood flow were observed,the hemodynamics parameters were measured and the diagnosis of US were compared with the pathology.Results] It showed that the anteroposterior/transverse diameter ratio(A/T) <1.5 in cervical lymph nodes metastasized patients were higher(P<0.001).And there were also obvious differences in the border,configuration,echo inside,and calcify(P<0.05).The peak systolic velocity(PSV) and the resistance index(RI) of the cervical lymph nodes metastasized were higher(P<0.05).Conclution] There are clinical value in the diagnosis of cervical lymph nodes metastasized by ultrasonography.