| 涂灿,邓生德*,于志海,张喜久,于亮.甲状腺微小乳头状癌的MSCT表现[J].中国医学影像技术,2014,30(1):38~41 |
| 甲状腺微小乳头状癌的MSCT表现 |
| MSCT features of papillary thyroid microcarcinoma |
| 投稿时间：2013-07-08 修订日期：2013-10-12 |
| DOI： |
| 中文关键词: 甲状腺微小乳头状癌 体层摄影术,X线计算机 |
| 英文关键词:Papillary thyroid microcarcinoma Tomography, X-ray computed |
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| 中文摘要: |
| 目的 分析甲状腺微小乳头状癌（PTMC）的MSCT表现。方法 回顾性分析经手术病理证实的40例PTMC的MSCT表现与病理结果。结果 30例单发，10例多发，共50枚瘤灶，CT显示47枚。42枚呈类圆形或类椭圆形，33枚位于腺叶表浅部位，45枚平扫呈均匀低密度，6枚突破包膜，19枚瘤灶发生钙化，其中细颗粒钙化9枚；增强后瘤灶强化幅度均未超过同层面甲状腺组织强化程度，40枚呈渐进性填充式强化，延迟期呈等或稍低密度，瘤灶变小。19例淋巴结转移，Ⅵ区均出现淋巴结。结论 当甲状腺腺叶表浅部位出现单发、均匀、低密度伴内部细颗粒钙化及渐进性填充强化时，应当高度警惕PTMC；若合并突破包膜或出现Ⅵ区淋巴结，则可诊断PTMC。延迟期扫描可以更好地反映瘤灶的强化特征。 |
| 英文摘要: |
| Objective To analyze MSCT features of papillary thyroid microcarcinoma (PTMC). Methods MSCT findings and pathologic results of 40 PTMC patients confirmed by histology were retrospectively reviewed. Results Single lesion was detected in 30 patients, while multiple lesions in 10 patients. There were 50 PTMC lesions, and CT found 47 lesions. Forty-two lesions were round or oval, 33 located in the superficial lobe, 45 showed homogeneous low density, 6 showed discontinuous edge of the thyroids. Calcifications were observed in 19 lesions, while granular calcifications were found in 9 cases. The enhancement rate of lesions did not exceed the same level of thyroids, and 40 lesions showed progressive filling. Lesions showed equal or slightly low density, and became small on the delayed phase. Nineteen patients had lymph node metastasis, all showing central lymph node. Conclusion Thyroid nodules with single, superficial part, low density, internal granular calcification and progressive filling should be highly suspected of PTMC. When the edge of thyroid is discontinuous or there is central lymph node, diagnosis of PTMC can be made. Delayed phase scanning can better reflect the enhancement features of PTMC. |
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