甲状腺良性结节样病变的CT诊断

目的：探讨甲状腺良性结节样病变的CT表现，重点研究CT检查对良性病变定性诊断准确率和鉴别诊断。方法：总结36例经手术病理证实的甲状腺良性结节样病变。甲状腺腺瘤21例，结节性甲状腺腺肿15例，全部病例行CT平扫，21例做增强扫描。结果：甲状腺腺瘤CT诊断与病理符合准确率为95.2%(20/21)；结节性甲状腺肿准确为73.3%（11/15）。单发类圆形均匀低密度结节是甲状腺腺瘤的特征性表现，结节性甲状腺肿以多发不规则形混杂密度病灶为特征。结论：CT在甲大辩论腺腺瘤与结节性甲状腺肿的诊断和鉴别诊断上个有较高准确性，但极少数鉴别仍有困难。

CT diagnosis of thyroid benign nodulated disease

Objective:To study CT findings of thyroid benign nodulated disease and to explore the imaging accuracy in diagnosis and differential diagnosis of benign disease.Methods:36 cases with thyroid benign nodulated disease proved by surgery and pathology, including 21 cases of thyroid adenoma and 15 cases of multinodular goiter,were performed plain CT scans and 21 of them performed enhanced CT scans. Results:The consistent rate of CT diagnosis of thyroid adenoma and multinodular goiter with pathological findings was 95.2%(20/21)and 73.3%(11/15),respectively.CT feature of thyroid adenoma was single ovoid homogenous hypodensity lesion,but multinodular goiter appeared multiple irregular lesions with inhomogenous density. Conclusion:CT is still of high accuracy in diagnosis and differentiate diagnosis of thyroid adenoma and multinodular goiter,although it hardly differentiated in few of cases.