RESUMO
Objective To assess the value of two-dimensional and color Doppler ultrasonography in diagnosis of Hashimoto thyroiditis (HT) .Methods Sixty-five patients with HT (HT group) confirmed histologically underwent two-dimensional and color Doppler ultrasonography.Sixty volunteers with normal thyroid ultrasonogram were enrolled as control group.Ultrasonic characteristics (size,echo,blood flow distribution,peak systolic velocity of the superior thyroid artery,accompanied nodules) ,pathological finding and laboratory parameters were recorded.Results The volume of thyroid increased in HT group than that of control group (t=10.748,P＜0.001) .Ultrasonic characteristics of HT were as followed:hypoechoic parenchyma (51/65,78.46%) ,multiple liner bright echoes throughout the parenchyma (46/65,70.77%) ,single or multiple macronodules in the parenchyma (6/65,9.23%) .Color Doppler flow imaging (CDFI) showed obviously increased blood flow (36/65,55.38%) ,slightly increased blood flow (25/65,38.46%) ,decreased or normal blood flow (4/65,6.15%) ,among which statistical differences of T3,T4,TSH,V_(max) were detected (P＜0.001) .Conclusion There is close relationship among ultrasonic characteristics.pathological and laboratory parameters of HT.Ultrasonography has high value in diagnosis and differential diagnosis of HT.