偏心性甲状舌管囊肿CT诊断分析(附10报告)

CT diagnosis of eccentric thyroglossal duct cyst(10 cases report)

目的探讨偏心性甲状舌管囊肿的CT表现。方法10例经手术和病理证实偏心性甲状舌管囊肿CT表现进行回顾性分析。结果10例偏心性甲状舌管囊肿中,单纯性7例,1例合并甲状腺癌,2例继发感染。偏左侧6例,右侧4例。CT表现颈前三角区偏心型囊性肿块,与舌骨、甲状腺关系密切;单纯性为边缘光整,密度均匀,低密度5例,等密度2例,增强病灶不增强。继发感染囊壁增厚毛糙,有强化。合并甲状腺癌为囊肿区不规则软组织肿块伴舌骨破坏。结论根据偏心型甲状舌管囊肿特定部位及CT表现可做出定性诊断。

Objective To explore the CT appearance of eccentric thyroglossal duct cyst（TDC）.Methods CT appearance of eccentric TDC（n=10） which were confirmed by operation and pathology were analysed retrospectively. Results There were 7 simple cyst.1 combined with thyroid carcinoma and 2 with secondary infection.6 was deviated to lefts ideand 4 right side.The eystic tumours appeared in anterior trangle of neck and related to hyoid and thyroid on CT images. The simple cyst showed well-defined smooth border and uniform density （low densityin 5 isodensity in 2 and enhancement）.The infective cystic wall was incrassation with coarse and enhanced after contrast injection. Irregularly shaped soft tumour was located in the interior of cyst and hyoid was destroyed in patient combined with thyroid carcinoma. Conclusion Eccentric TDC can be diagnosed qualitatively according to its special location and CT findings.