脐尿管囊肿的CT诊断价值  

Diagnostic Value of CT in Urachal Cyst

作　　者：靳秀丽[1] 杨汉丰[1] 杜勇[1] 李杨[1] 段如刚[1] 

机构地区：[1]川北医学院附属医院放射科,四川637000

出　　处：《放射学实践》2009年第8期878-881,共4页Radiologic Practice

摘　　要：目的:探讨脐尿管囊肿的CT表现及其临床应用价值。方法:回顾性分析16例经手术病理证实的脐尿管囊肿的横断面及多平面重组图像的CT表现,包括病灶部位、形态、大小、密度、Retzius间隙及邻近组织的影像改变情况。结果:16例脐尿管囊肿均位于腹中线处Retzius间隙内的脐尿管走行区。1例脐尿管囊肿CT显示阴性。4例单纯性脐尿管囊肿的CT表现为椭圆形或长条状囊性病灶,囊壁光整,囊内密度均匀,CT增强后无强化。7例脐尿管囊肿伴感染者CT表现为形态类似的囊性病灶,壁厚强化明显,其中1例并发脐尿管憩室形成。2例脐尿管囊肿伴瘘形成表现为含对比剂的管状或索状结构,位于脐与膀胱之间,直径约为0.5～2.0cm。2例脐尿管囊肿伴瘘道伴脓肿形成表现为含对比剂的管状结构口径不一致,轮廓不清,增强后强化明显。结论:CT检查能清晰显示脐尿管病变的部位、形态、密度及邻近组织的关系,有利于该病变的正确诊断。Objective： To discuss CT manifestations of urachal cyst in order to improve our knowledge of this disease. Methods： 16 eases of urachal cyst proven by surgery and pathology were retrospectively reviewed about their CT manifesta- tions with axial and muhiplanar reconstructed images, the emphasis was focused on its location, shape, size, enhancement- pattern and radiological features in Retzius space and its adjacent tissues. Results： All urachal cysts were located along the course of the urachus （n= 16） on the median line of Retzius space. There was no positive CT finding in 1 case of uraeha] cyst （n~ 1）. Simple urachal cysts appeared as homogeneous oval-shaped or long cystic lesions with smooth inner wall and no enhancement after the administration of contrast agent （n= 4）. Seven cases of infected urachal cysts manifested as cysts with thickening and enhanced wall,one case being complicated with urachal diverticulum. 2 cases of urachal cysts with fistu- la appeared as 0.5~2.0cm diameter tubiform or cord like structure between the umbilicus and bladder （n= 2）. 2 cases of infected urachal cysts with fistula and abscess appeared as different inner diameter tubiform structures with marked en- hancement after the administration of contrast agent （n= 2）. Conclusion=CT scans can demonstrate the location,shape, den- sity of urachal cyst and adjacent structures and provide reliable diagnosis for these pathological changes.

关 键 词：脐尿管囊肿 体层摄影术 X线计算机 泌尿生殖系统畸形 

分 类 号：R691[医药卫生—泌尿科学] R816.7[医药卫生—外科学]