目的分析CT在乳头状甲状腺 结节微小癌和微小结节性甲状腺肿鉴别 诊断中的应用价值。方法 回顾性分析 我院2010年1月至2014年7月经过手术及 术后病理证实的甲状腺微小结节(直径 0.5-1.0cm)190例(共285枚)的CT资料， 按照病理结果分为乳头状甲状腺微小癌 (Papillary thyroid microcarcinoma， PTMC)组和微小结节性甲状腺肿 (Micronodular goiters，MNG)组，对 比两组患者的一般CT征象和不同部位CT 值。结果 PTMC CT征象中单发结节、瘤体 不规则、增强后边界模糊、细颗粒状钙 化和边缘中断征显著高于MNG，而混合钙 化显著低于MNG，P<0.01。PTMC组的左、 右叶体积显著小于MNG，峡部体积和结节 体积显著大于MNG，P<0.01；PTMG组的腺 体和结节平扫、增强CT值和MNG组无显著 差异，P>0.05。结论 CT在乳头状甲状腺 结节微小癌和微小结节性甲状腺肿鉴别 诊断中具有一定的应用价值。

Objective To analyze the value of CT in the differential diagnosis of papillary thyroid cancer and small nodules small nodular goiter. Methods A retrospective analysis of our hospital from January 2010 to July 2014 after surgery and pathologically confirmed thyroid small nodules (diameter 0.5-1.0cm) 190 patients (total 285) of the CT data, in accordance with the pathological findings points papillary thyroid carcinoma tiny (Papillary thyroid micro carcinoma, PTMC) group and the tiny nodular goiter (Micro nodular goiters, MNG) group, the general comparison of the two groups of patients with CT signs and different parts of the CT values. Results PTMC CT findings in solitary nodules, tumors irregular, fuzzy boundaries after enhancement, fine granular calcifications and edge interrupt levy significantly higher than the MNG, mixed calcification was significantly lower than MNG, P<0.01. Left PTMC group, the right lobe volume was significantly smaller than MNG, isthmus volume and nodule volume was significantly greater than the MNG, P<0.01; PTMG group of glands and nodules unenhanced, enhanced no significant difference in the CT values and MNG group, P> 0.05. Conclusion CT has a certain value in papillary thyroid cancer and nodules tiny tiny differential diagnosis of nodular goiter.