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MRI Appearance of Intraspinal Enterogenous Cysts

李烁 李明利 金征宇

中国医学科学院中国协和医科大学北京协和医院

放射科，北京 100730

Shuo Li，Ming－li Li，Zheng－yu Jin

Department of Radiology，PUMC Hospital，CAMS and PUMC，Beijing 100730，China

ABSTRACT

　　Objective：To describe the MR manifestations of intraspinal enterogenous cysts，and to provide reliable informations for further clinical management.

　　Methods：The MRI findings and related clinical data of 6 cases surgically and pathologically confirmed intraspinal enterogenous cysts were retrospectively studied.

　　Results：Among the 6 patients，most of the enterogenous cysts were oval or fusiform in shape with well－defined margin. 5 cysts were located in the subdura1 extramedullary space and 1 cyst was located intramedullarily. The signals were hypo－or iso－intensity on T1W images and hyperintensity on T2W images. On the postcontrast images，5 showed no enhancement，and 1 was enhanced peripherally.

　　Conclusions：The MRI findings of intraspinal enterogenous cysts are specific and the correct preoperative diagnosis may be obtained by integrating MRI findings and clinical materials.

　　Key words：enterogenous cysts； spinal cord； magnetic resonance imaging

　　椎管内肠源性囊肿（intraspinal enterogenous cyst）多由胚胎发育时期神经肠管的残余组织演变形成^[1]，临床上极为少见，其发现与诊断多依靠磁共振检查，由于认识不足，术前常不能得到准确的定性诊断。本文总结了6例经手术和病理证实的椎管内肠源性囊肿的MRI表现，以提高对该病的认识。

　　一、资料与方法