彩色多普勒超声诊断小结节甲状腺癌的价值

Diagnostic Value of Color Doppler Ultrasonography in Small Nodule Thyroid Cancer

目的:探讨彩色多普勒超声对小结节甲状腺癌的诊断价值。材料和方法:分析60例经手术病理证实的小结节甲状腺癌(结节直径7～23mm,平均15.98±3.71mm),二维灰阶超声、彩色多普勒显像及频谱多普勒图像特点。结果:60例小结节甲状腺癌中,超声明确诊断45例(75%)。声像图最多见的表现为结节内微钙化灶,占75%。与多发结节相比较,超声对单发结节的诊断更为准确(P<0.05)。54例(90%)彩色多普勒图像显示病灶内部血流信号增多,频谱呈高速高阻型。颈部淋巴结转移27例,其中24例转移淋巴结内含有微钙化。结论:灰阶超声结合彩色多普勒血流显像对小结节甲状腺癌具有重要的诊断价值。

Purpose： Small nodule thyroid cancer, less than 3cm in diameter, is difficult to detect clinically. The current study was designed to explore the practical value of color Doppler uhrasonography in diagnosing this type of tumor. Materials and Methods： Sixty cases with surgical confirmed thyroid cancer （tumor diameter of 15.98±3.71mm, 7-23mm in range） were included in this study. Images derived with gray-scale ultrasonography, color Doppler ultrasonography and pulse wave ultrasonography from these patients were retrospectively analyzed. Results： Forty-five of the 60 cases of thyroid cancer （75%） were accurately diagnosed by ultrasonography. The most conmen characteristic of uhrasouography was microcalcification which was found in 45 cases （75%）. Single nodule was more accurately diagnosed with ultrasonography in comparison to multiple nodules （ P 〈 0.05 ）. Color Doppler imaging showed increased blood tlow signals within the lesion in 44 cases （90%） of a high-speed, high resistance character. Lymphnode metastasis at neck was found in 27 case, including 24 nodes with microcalcification. Conclusion： Combining gray-scale ultrasonography and color Doppler uhrasonography could improve diagnostic accuracy of small nodule thyroid cancer.