慢性淋巴细胞性甲状腺炎的MSCT诊断

目的:探讨慢性淋巴细胞性甲状腺炎(CLT)的MSCT表现及其诊断与鉴别诊断。方法:回顾性分析经手术病理证实的CLT患者56例,其中伴有结节性甲状腺肿17例、甲状腺腺瘤15例和甲状腺癌9例。全部病例均行CT平扫,42例同时增强扫描。结果:CT平扫甲状腺增大49例,腺体密度均匀减低30例,不均匀减低16例;伴有结节或团块37例,其中单发结节24例,多发结节10例,弥漫小结节3例;出现钙化10例、囊变4例。增强扫描病变呈速升缓降型,60sCT值达峰值,然后缓慢下降,强化均匀或不均匀。结论:CLT常合并结节性甲状腺肿、腺瘤和甲状腺癌,MSCT表现有一定特点,帮助诊断及鉴别诊断。

MSCT Diagnosis of Chronic Lymphocytic Thyroiditis

Purpose:To explore the MSCT manifestation,diagnosis and differential diagnosis of chronic lymphocytic thyroiditis(CLT).Methods: Fifty-six cases of CLT confirmed by operation and pathological result were reviewed,including 17 cases of nodular goiter,15 cases of thyroid adenoma and 9 cases of thyroid carcinoma.All the cases received plain CT scan,and 42 of them accepted contrast-enhanced scan.Results: Plain CT scan: 49 cases were shown with thyroid goiter,30 of them were with homogeneous low densities in the thyroid,and 16 cases with non-uniform low densities;37 cases were shown with nodules or lumps,which included 24 cases with solitary nodule,10 cases with multiple nodules,and 3 case with diffuse nodules;Calcification was found in 10,and cystoid degeneration in 4.Contrast-enhanced CT scans: CLT was shown with quick ascent and slow decent time-density curve,the CT value of the lesion was increased to maximum at 60’s,then was decreased slowly;The enhancement was homogeneous or heterogeneous.Conclusion: CLT often accompanies with nodular goiter,thyroid adenoma and thyroid carcinoma.It has some common features on MSCT,which can be used for diagnosis and differential diagnosis of CLT.