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甲状腺微小乳头状癌的64层螺旋CT表现
作者:李志娟  许团新  刘晓  李兴付  陈真平 
单位:中山大学附属东华医院放射科  广东 东莞 523110 
关键词:甲状腺肿瘤/放射摄影术  乳头状/放射摄影术 体层摄影术 螺旋计算机 回顾性研究 
DOI:R736.1;R730.44
出版年,卷(期):页码:2017,32(5):435-439
365bet娱乐官网网址 摘要:

目的 探讨甲状腺微小乳头状癌(papillary thyroid microcarcinoma,PTMC)的64层螺旋CT征象及其特点。方法 回顾性分析102例(117枚瘤体)PTMC的影像资料,全部病例均行CT平扫,其中77例(80枚瘤体)行CT增强扫描,从瘤体形态、部位、边缘、钙化、强化特征及颈部淋巴结肿大等方面归纳其特征。结果 92枚瘤体呈不规则形,25枚瘤体呈类圆形;28枚瘤体位于甲状腺边缘,其中25枚瘤体旁甲状腺包膜缺损。96枚瘤体CT平扫显示,87枚瘤体边缘清晰,9枚瘤体边缘模糊;瘤体钙化率为36.8%,74.4%位于瘤体内部,65.1%为细颗粒型钙化。80枚瘤体增强扫描后,63枚瘤体边缘变模糊,瘤体直径较平扫时缩小。结论 掌握PTMC的64层螺旋CT表现有助于提高CT检出率及诊断准确率。

Objective To review the manifestations and characteristics of papillary thyroid microcarcinoma (PTMC) on 64-slice spiral CT scan. Methods The imaging data of 102 patients with PTMC (117 tumors) were retrospectively analyzed.All patients underwent 64-slice spiral CT scan,among which 77 cases (80 tumors) received enhanced scans.The imaging manifestations were summarized according to the tumor sites,shape,edge,calcification,enhancement features and cervical lymph nodes. Results The tumor shapes were irregular in 92 cases,and round in 25 cases.The tumor was located at the edge of the thyroid in 28 cases,including 25 cases showing defects of adjacent thyroid capsule.Among 96 tumors receiving plain CT scan,there was clear tumor edge in 87 cases and blurry edge in 9 cases.The calcification rate was 36.8%,74.4% of the calcifications were located in the center of tumor,and 65.1% calcifications were of the fine particles type.Among 80 tumors undergoing enhanced scans,63 showed blurry tumor edge.The tumor diameter shown on enhanced CT was shorter than that shown on CT scan. Conclusion The manifestations on 64-slice spiral CT scan are of value in improvement of diagnostic accuracy of PTMC.

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