【摘要】 目的探讨甲状腺微小癌超声显像特征表现。方法经手术和病理证实74例甲状腺微小癌患者,共85个癌结节,均经超声检查,分析病灶超声显像特点,包括癌结节的大小、回声水平、内部成分、形状、钙化类型、后方回声、内部血液供应情况、阻力指数。结果85个癌结节伴结节性甲状腺肿的48个,并甲状腺腺瘤的4个,单发癌33个。85个癌结节超声显像呈低回声,实性83个占97.6%,混合回声2个,占2.4%;癌结节边缘无包膜回声较模糊77个,占90.6%,尚清楚(无包膜)8个占9.4%;均为圆形或类圆形;内部显示出微钙化56个,占65.9%,钙化位于中央47个,位于周边的9个;后方回声衰减27个,占31.8%,后方回声无变化54个,占63.5%,后方回声增强4个,占4.7%;癌结节内显示出血流信号83个,占97.6%,其中,探测到明显血流频谱37个,占43.5%,平均血流速度(24.1±19.4)cm/s,平均阻力指数0.69±1.2。低回声、实性、边缘模糊,纵横比≥1、微钙化、内部血流丰富、高阻力指数等是甲状腺微小癌重要诊断指标。结论甲状腺微小癌超声显像具有一定特征性表现,认真综合运用各项超声图像特征,能大大提高甲状腺微小癌的诊断水平。更多还原

【Abstract】 Objective To study the ultrasonography characteristics of thyroid microcarcinoma.Methods 74 patients of thyroid microcarcinoma,a total of 85 cancer nodules,which were confirmed by surgery and pathology,were analyzed through ultrasound imaging characteristics of the disease including the size,echo level,internal composition,shape,calcification and the type of echo in the rear,the internal blood supply and RI of the cancer nodule.Results Among 85 cancer nodulars there were 48 cases with nodular goiter,4 cases with thyroid adenoma.Only 33 cases had neither goiter nor adenoma.85 cancer nodules were low echo on ultrasound imaging.83 cases were solid accounting for 97.6%.2 cases were mixed with echo accounting for 2.4%.77 cancer nodules edge was coated with a vague echo accounting for 90.6%.8 cases were still well ( No envelope) for 9.4%.All were round or like round.56 cases showed micro-calcification in-house,accounting for 65.9%.The calcification of 47 cases were in the center.9 cases were around.27 cases were rear echo attenuation,accounting for 31.8%.54 cases had unchanged echo in the rear,accounting for 63.5%.4 cases had strengthened rear echo,accounting for 4.7%; 83 cancer nodules showed blood flow signal,accounting for 97.6%,of which blood was obviously detected in 37 cases(accounted for 43.5%)with an average flow rate of 24.1±19.4cm/s and the average resistance index 0.69±1.2.Hypoechoic,solid,fuzzyedge,A/T≥1,micro-calcification,in-house blood-rich,high-resistance index,et al were important diagnosis indicators of thyroid microcarcinoma.Conclusions The ultrasound imaging of thyroid microcarcinoma has certain characteristics.Carefully analyzing each characteristics of the ultrasound image,we can greatly increase the diagnosis rate of thyroid microcarcinoma.更多还原