目的探讨甲状腺癌的超声诊断准确率及其局限性。方法分析经手术病理证实的28例甲状腺癌患者的超声诊断结果,从肿块大小、形态、回声类型、彩色多普勒表现等方面评价超声诊断的价值。结果28例均检出甲状腺占位,超声提示恶性肿瘤的有12例,诊断准确率42.86%。结论甲状腺癌的超声表现具有一定特征性。超声可作为甲状腺癌的首选检查方法,但对于隐匿性癌的诊断还有其局限性。 Objective To investigate the diagnostic accuracy and limitations of ultrasound in thyroid cancer. Methods Ultrasonography was performed in 28 cases of thyroid carcinoma confirmed by surgery and pathology. The diagnostic value of ultrasound was evaluated in terms of tumor size, morphology, echo type and color Doppler imaging. Results Twenty-eight cases were diagnosed as thyroid gland, ultrasound showed 12 cases of malignant tumors, the diagnostic accuracy rate was 42.86%. Conclusion Ultrasound of thyroid cancer has some characteristics. Ultrasound can be used as the first choice of thyroid cancer examination, but the diagnosis of occult cancer has its limitations.