甲状腺微小癌的超声结构特性及其诊断价值

目的 探讨甲状腺微小癌（Thyriod microcacinoma,TMC）的超声结构特性,以提高其诊断准确率.方法 回顾性分析30例经手术和病理证实的TMC的超声结构特性.结果 TMC 30例共34个癌结节.位于右叶19个,左叶12个,峡部3个;病灶直径2～10 mm; 32个癌结节（94％）表现为边缘不规则可见毛刺;26个（76％）内可见“针尖样”微钙化;6例（20％）颈部淋巴结转移,其中2例淋巴结内出现“针尖样”微钙化.其中微小乳头状癌29例（33个结节）,甲状腺微小髓样癌1例（1个结节）.结论 TMC的边缘毛刺、“针尖样”钙化具有一定的特征性,对诊断TMC具有重要价值.

Ultrasonic structural characteristics of thyroid microcarcinoma and the diagnostic value of ultrasound

Objective To study the ultrasonic structural characteristics of thyroid microcacinoma （TMC）, in order to improve the diagnostic accuracy of TMC. Methods The ultrasonic structural characteristics of TMC were ret- rospectively analyzed in 30 patients （34 cancer nodules） confirmed by surgery and pathological changes. Results In the 30 patients, a total of 34 cancer nodules were found, with small papillary microcarcinoma 29 cases （33 nodes） and medullary thyroid microcarcinoma 1 case （1 nodes）, of which 19 located in the right lobe, 12 in the left lobe and 3 in the isthmus. The lesions were 2-10 mm in diameter. Thirty-two cancer nodules （94%） were characterized by irregular edge visible burr, 26 （76%） can be seen with ＂needlepoint＂microcalcification, and 6 （20%） showed neck metastasis lymph nodes, in which 2 appeared ＂needlepoint＂ microcalcification within lymph nodes. Conclusion Ultrasound of TMC has certain specific structural characteristics, with burr and ＂needlepoint＂ microcalcification, which provides important value for the diagnosis of TMC.