CT诊断甲状舌管病变的应用价值

目的探讨CT用于诊断甲状舌管病变(TDL)的应用价值.方法回顾性收集经手术病理或穿刺活检证实的TDL患者106例,分析TDL的CT表现.结果甲状舌管囊肿(TDC)99例,65例形态规则,88例薄壁,90例囊壁无/轻度强化,90例病灶主体位于肌内,7例病灶囊壁出现类甲状腺样强化,7例病灶后缘出现甲状舌管残留,1例出现囊壁钙化.异位甲状腺(ETG)4例,CT均表现为相对高密度影,增强后明显强化,3例继发甲状腺肿.甲状舌管癌(TDCa)3例,均为囊壁出现强化壁结节及钙化,2例舌骨体受侵,1例囊腔内积血,1例颈部淋巴结转移.结论CT可以清晰显示甲状舌管病变,增强后可通过强化幅度对其进行准确定性,同时还可以明确病变与相邻组织的空间位置关系.

Objective To explore the application value of CT in the diagnosis of thyroglossal duct lesion(TDL).Methods The CT findings of 106 patients with TDL confirmed by surgery,pathology or biopsy were collected and analyzed retrospectively.Results There were 99 cases of thyroglossal duct cyst(TDC),65 cases were regular in shape,88 cases were thin-walled,90 cases had no/mild enhancement of the capsule wall,90 cases were located in the muscle,7 cases had thyroid like enhancement of the capsule wall,7 cases had thyroglossal duct residue at the posterior edge of the lesion,and 1 case had calcification of the capsule wall.In 4 cases of ectopic thyroid gland(ETG),CT showed relatively high-density shadow,which was significantly enhanced after enhancement,and 3 cases had secondary goiter.There were 3 cases of thyroglossal duct carcinoma(TDCa),all of which had enhanced wall nodules and calcification in the cystic wall,2 cases of hyoid body invasion,1 case of hematocele in the cystic cavity and 1 case of cervical lymph node metastasis.Conclusion CT can clearly show the thyroglossal duct lesions.After enhancement,it can be accurately characterized by the enhancement amplitude.At the same time,it can also clarify the spatial relationship between the lesions and adjacent tissues.