罕见部位肠源性囊肿2例并文献复习

Enterogenous cyst in rare positions： report of two cases and review of the literatures

目的探讨罕见部位肠源性囊肿的发病机理及磁共振表现，提高其诊断准确性。方法回顾性分析2例经手术和病理证实的罕见部位肠源性囊肿患者的临床资料，结合相关文献分析其磁共振特点。结果2例罕见部位肠源性囊肿，1例位于尾骨后方软组织内，与椎体后部相连，不与椎管相通；另1例位于后纵隔，与椎体前部相连，局部向椎管内延续。MR平扫，病灶T1WI低信号，T2WI呈稍高／高信号；MR增强，囊壁呈环形强化、实性部分强化。结论本文所报道的2例肠源性囊肿发病部位特殊，且有特征性MR表现，这对以后诊断该病具有一定提示意义。

Objective To investigate the pathological and magnetic resonance （MR） manifestations of enterogenous cyst（EC） in rare positions and to improve the diagnostic accuracy of this disease. Methods The clinical data of two cases of EC in rare positions confirmed by surgery and pathology were retrospectively analyzed. The MR features were analyzed according to related literatures. Results Among the two cases of EC in rare positions, the lesion located in the soft tissue behind coccyx, connected with the back of vertebral body and disconnected with spinal canal in 1 case and located in back mediastina, connected with the front of vertebral body and extended to spinal canal in another case. Plain MR scan showed that the lesion had low signal on TlWI and slightly hyperintense or high signal on T2WI. And contrast MR sowed that the capsule wall was circularly enhanced and the solid portion was enhanced. Conclusion The lesions of these 2 cases of EC in this paper located in the special parts of body and have special MR manifestations. These are helpful in diagnosing this disease in the future.