甲状腺微小乳头状癌的超声诊断与鉴别诊断

目的：探讨甲状腺微小乳头状癌的声像图特征。方法：选取甲状腺微小乳头状癌72个结节及同期最大直径≤10 mm的良性结节68个进行对比研究。结果：①甲状腺微小乳头状癌多数表现为实质性低回声,均匀或不均匀,边界不清晰,边缘不规则,周边无声晕,部分结节内含微小钙化,侵犯甲状腺被膜,内部血流信号丰富。②高频超声诊断甲状腺乳头状微小癌的敏感性和特异性分别为98.6%、88.2%。结论：高频超声是鉴别诊断甲状腺微小乳头状癌的有效方法。

The Ultrasonic Diagnosis and Differential Diagnosis of Papillary Thyroid Microcarcinoma

Objective：To analyze ultrasonographic features of papillary thyroid microcarcinom.Methods： A comparative analysis was carried out between selected 72 nodules of papillary thyroid microcarcinoma and 68 nodules with nodules≤10mm in maximum diameter in the same period.Results： ①Ultrasound of papillary thyroid microcarcinoma appeared as solid and hypoechoic tumor in majority,with irregular and indefinite border,homogeneous or heterogeneous internal echo and presence of peripheral silent halo.Some nodules contained microcalcifications,showed violation of the thyroid capsule,and had rich internal flow signals.②The sensitivity and specificity of the high-ultrasonography in diagnosis PTMC were 98.6% and 88.2% respectively.Conclusions：High frequency ultrasound is effective method to differentiate papillry thyroid microcarcinoma.