增强CT对甲状腺局灶性病变良恶性鉴别的评价

目的总结39例甲状腺局灶性病变的CT表现,提高CT对此类疾病的诊断价值。方法回顾性分析经手术及病理证实的39例甲状腺局灶性病变共54个病灶的CT表现,对强化幅度、均匀与否、形态等进行观察。同时取正常对照组平扫及增强各100例,计算平均最大强化幅度,与病例组相比较。结果恶性组实性病灶的强化幅度明显低于良性组及对照组,差异有显著性(P<0.05),但良性组与对照组相比差异无统计学意义。恶性病变增强后密度仍比较均匀,良性病变更多见不均匀强化。囊实性病灶的定性仍然有一定困难。结论CT静脉造影剂增强扫描,对甲状腺局灶性病变的良恶性鉴别有一定帮助。

CT diagnosis of thyroid nodules diseases

Objective To improve CT diagnosis of thyroid nodulous lesions by evaluating CT findings of 39 cases with thyroid nodulous diseases retrospectively. Methods CT findings of thyroid nodulous diseases confirmed surgically and pathologically in 39 cases were reviewed retrospectively in the form of benign and malignant groups, and cystic, cysti-solid and solid types. Take 100 plain scans and 100 contrast enhanced scans of normal thyroid glands in the study as control. Observe and calculate the max amplification of enhancement, the density homogenization and shape of the benign and malignant lesions with their pathologic findings. Results The max enhancement amplification of malignant nodules or masses after contrast enhancement were considerably lower than that of control group and benign lesions statistic significantly (P<0.05). But the difference of such amplification between the benign and control group was no statistic significant. The enhancement was inclined to be homogeneous with malignant lesions and heterogeneous with benign lesions comparatively. Conclusion CT study, especially that with introvenous contrast enhancement are of some help in differentiate diagnosis of benign from malignant thyroid lesions.