甲状腺单发结节的CT诊断和鉴别诊断  

CT Diagnosis of Solitary Thyroid Nodulous Diseases

作　　者：兰勇[1] 龙晚生[1] 易兰[1] 李伟[1] 张朝桐[1] 谭国强[1] 钟向阳[1] 

机构地区：[1]中山大学附属江门市中心医院CT室,广东529030

出　　处：《放射学实践》2009年第2期142-144,共3页Radiologic Practice

摘　　要：目的:总结201例甲状腺单发结节的CT表现,提高CT对甲状腺结节的诊断和鉴别诊断价值。方法:回顾性分析经手术及病理证实的201例甲状腺单发结节病变的CT表现,对结节形态、边缘、坏死、钙化、密度、强化幅度、周围侵犯和颈部淋巴结肿大等征象进行分析。结果:甲状腺恶性病变多表现为实质结构、边缘模糊、形态不规则,内部可见微小钙化,以及周围结构侵犯和颈部淋巴结肿大,与良性病变组比较差异有显著性意义(P<0.01)。恶性病变组实质部分强化峰值和强化幅度显著低于腺瘤组(P<0.01)。结论:CT是诊断甲状腺结节的有效和可靠的检查方法,掌握各种甲状腺病变的CT表现特点能有效的提高诊断的准确性。Objective：To improve CT diagnosis of thyroid nodulous lesions by analyzing the CT characteristics of 201 cases with thyroid nodules retrospectively. Methods：CT findings of thyroid nodulous diseases confirmed surgically and pathologically in 201 cases were observed retrospectively, and the CT features were evaluated with different window levels and widths on PACS by 3 radiologists independently. Results：Differences of the CT characteristics between the benign and ma lignant nodules of the thyroid gland showed statistical significance （P〈0.01）. Malignant nodules were more often ill-defined,hypodense, irregular, solid and infiltrating, contained micro calcification and revealed metastatic Iymphyadenopathy （P〈0.01）. The peak value of enhancement amplification of malignant nodules was considerably lower than that of adenoma. Conclusion：CT is an effieient and reliable imaging method for detection and differential diagnosis of thyroid nodules. Mastering the CT features of wtrious thyroid nodules can improve the accuracy of differential diagnosis.

关 键 词：甲状腺结节 体层摄影术.X线计算机 诊断 

分 类 号：R816.6[医药卫生—放射医学]