甲状腺乳头状癌16层螺旋CT表现

The Imaging findings of Papillary Thyroid Cancer in 16-slice CT

目的探讨甲状腺乳头状癌在16层螺旋CT影像上的表现。方法回顾性分析经病理证实的123例甲状腺乳头状癌的16层螺旋CT征象,并对征象进行统计分析。结果 123例甲状腺乳头状癌中单叶发病95例(77.24%),双叶15例(12.20%),峡部13例(10.57%)。98例(79.67%)甲状腺乳头状癌平扫为低密度,余25例(20.33%)表现为等密度。21例(17.07%)有沙粒样钙化,38例(30.89%)有斑块样钙化。91例(73.98%)表现为中等度强化,但强化欠均匀,余32例(26.02%)表现为明显强化,但强化欠均匀。增强后101例(82.11%)表现为病灶边缘规整、清晰,22例(17.88%)病灶不规则。80例(65.04%)与周围组织关系清楚,43例(34.96%)与周围组织关系不清楚。75例(60.98%)颈部淋巴结转移。结论甲状腺乳头状癌的CT表现为甲状腺实质内3cm以下低密度,边缘清楚,中等度或中等度以上欠均匀强化的结节病变。

Objective To investigate the imaging findings of the papillary thyroid carcinoma in 16-slice CT. Methods The CT features 123 cases of thyroid papillary carcinoma proven pathologically were analyzed retrospectively. Results Of 123 cases of thyroid papillary carcinoma, the lesion was located in single lobe of the thyroid in 95 cases （77.24%）, double-lobe in 15 cases （12.20%）, isthmus in 13 cases （10.57%）. The lesion of lower attenuation was displayed in 98 cases （79.67%）, isodense in 25 cases （20.33%）. The sand-like calcification were showed in 21 （17.07%）, and plaque calcification in 38 patients （30.89%）. The moderate non-homogeneous enhancement was displayed in 91 cases （73.98%）, and marked non-homogeneous enhancement in 32 cases （26.02%）. The lesion had regular and clear edge in 101 cases （82.11%）, irregular in 22 cases （17.88%）. Of 80 cases （65.04%） showed be well defined with the surrounding tissue, ill-defined in 43 cases （34.96%）. The cervical metastatic lymph nodes were found in 75 cases （60.98%）. Conclusions The CT findings of papillary thyroid carcinoma showed as a less than 3cm lower attenuation nodular lesion with well-defined, moderately and non-homogeneous enhancement.