目的 对比超声及CT诊断结节性 甲状腺囊肿合并甲状腺癌的价值。方法 回顾性分析经临床病理确诊为结节性甲状 腺囊肿合并甲状腺癌患者48例超声及CT影 像学资料，并与临床病理对照。结果 超 声联合CT诊断准确率为89.58%明显高于超 声(60.42%)和CT(72.92%)，具有统计学意 义(P<0.05)。29例超声表现异常，其中23 例结节形态不规则，纵横比≥1，边缘毛 刺征，与周围组织无清晰边界；19例结节 内有钙化病灶，呈砂粒状；24例血流信号 丰富；13例淋巴结转移。35例CT影像学异 常，其中28例CT平扫呈低密度，24例出现 “边界反转征”，30例形态不规则，19例 结节临近的甲状腺包膜中断，25例结节内 有钙化病灶，11例淋巴结转移。结论 超 声联合CT检查能提高结节性甲状腺肿合并 甲状腺癌诊断准确率。

Objective To compare the value of ultrasound and CT in the diagnosis of nodular goiter with thyroid cancer. Methods The ultrasonic and CT imaging data of 48 patients with nodular goiter complicated with thyroid cancer diagnosed by clinical pathology were analyzed retrospectively and compared with clinical pathology. Results The diagnostic accuracy of ultrasound combined with CT (89.58%) was significantly higher than that of ultrasound (60.42%) and CT (72.92%) (P<0.05). The ultrasound findings of 29 cases were abnormal, including 23 cases of nodules of which the shape was irregular and aspect ratio was larger than or equal to 1, edges were with spicule signs and there were no clear boundaries with surrounding tissues. 19 cases of nodules were with calcification, in sand granular shape. 24 cases of blood flow signal was abundant and there were 13 cases of lymph node metastasis. 35 cases of CT findings were abnormal, including 28 cases of plain CT scan showing low density, 24 cases with inversion-boundary signs, 30 cases of irregular shape, 19 cases of adjacent thyroid capsule interruption, 25 cases of nodules with calcification lesions and 11 cases with lymph node metastasis. Conclusion Ultrasound combined with CT examination can improve the diagnostic accuracy rate of nodular goiter with thyroid cancer.