CT诊断鳃裂囊肿价值的探讨

The value of CT diagnosis to branchial cleft cyst

目的分析鳃裂囊肿的CT表现，讨论CT对鳃裂囊肿的诊断价值。方法回顾性分析经手术和病理证实的9例鳃裂囊肿患者的CT资料，9例均行CT平扫和增强检查，1例行MRA检查。结果根据Bailey的分型，本组9例中5例属Ⅰ型，4例属Ⅱ型；鳃裂囊肿常表现为颈外侧部和颌下区无压痛囊性肿块。CT表现为颈前三角区，沿胸锁乳突肌前内侧，呈上、下走行的囊状密度影，边界清晰，壁薄，其内密度均匀。周围组织受推压、移位。当合并感染时，边界较模糊，囊壁增厚，部分囊壁有明显强化。结论CT检查可以清晰显示鳃裂囊肿的部位、大小、形态及其与周围组织结构的关系，尤其是冠状位及轴状位重建图像，病变显示得更加清晰，易于做出准确的诊断。

Objective To analyze the CT findings of branchial cleft cyst an to discuss the diagnostic value of CT to branchial cleft cyst. Methods Retrospective analysis of CT data of nine patients with cleft cyst confirmed by surgery and pathology. All the cases took plain and enhanced CT examination and 1 patients took a routine MRA examination. Results According to the Bailey-type, five cases were divided into type Ⅰ group and four cases into type Ⅱ; Branchial cleft cyst usually showed lateral neck and submandibular area cystic mass without tenderness. Density cystic shadow with border clear and thin - walled in anterior triangular area along the sternocleidomastoid anteromedial in CT findings. Conclusion CT can clearly show the location, size, shape and the relationship with its organizational structure around, particularly the image reconstruction of the coronal and axial digital to make accurate diagnosis.