结节性甲状腺肿41例CT表现

CT manifestations of 41 cases of nodular goiter

目的探讨结节性甲状腺肿的CT表现。方法回顾性分析经手术及病理检查证实的41例结节性甲状腺肿的CT资料,所有患者均行平扫,其中30例行CT增强扫描。结果 41例患者中单结节型4例,多结节型37例。病灶密度均低于正常甲状腺,呈单发或多发、散在、规则、大小不一的低密度结节,病灶密度不均,边界清楚32例,模糊9例,增强扫描呈不均匀强化,甲状腺包膜显示清楚,边缘连线完整。钙化19例,囊变21例。结论甲状腺内多个、散在、规则的低密度结节为结节性甲状腺肿较特征性的CT表现。

Objective To study the CT findings of nodular goiter. Methods 41 cases of nodular goiters proved by sur- gical or pathological data were retrospectively analyzed. All eases were examined by plain CT scan,and among them,30 cases were additionally examined by enhanced scan. Results The CT findings of nodular goiter could he classified into the single-nod- ule type（n=4） aud the multiple-nodules type（n=37）. The density of foeal lesion in 41 cases was lower than that of nornal thyroid gland,which manifested as single or muhiple,sporadie,varying-sized and regular-margin low-density nodules,the density of lesion focus was uneven wilh the clear margin in 32 cases and the vague margin in 9 eases. The enhaneed scan manifested by uneven enhancement. The envelop of thyroid gland was clearly displayed with/he complete peripheral edge ligature. Calcification occurred in 19 cases and cystoid change in 21 cases. Conclusion The muhiple,sporadie and regular-margin low-density nodules in thyroid are the characteristic CT features of nodular goiter.