Rathke囊肿临床及MRI诊断  

Clinical and MRI features of Rathke cleft cysts

作　　者：鱼潇 冒平[1] 李瑞春[1] 陈伟[1] 孙亲利[2] 鱼博浪[2] YU Xiao;MAO Ping;LI Ruichun;CHEN Wei;SUN Qinli;YU Bolang(Department of Neurosurgery,the First Affiliated Hospital of Xi'an Jiaotong University,Xi'an 710061,China;Department of Radiology,the First Affiliated Hospital of Xi'an Jiaotong University,Xi'an 710061,China)

机构地区：[1]西安交通大学第一附属医院神经外科,陕西西安710061 [2]西安交通大学第一附属医院医学影像科,陕西西安710061

出　　处：《实用放射学杂志》2021年第1期21-24,共4页Journal of Practical Radiology

摘　　要：目的分析Rathke囊肿的临床和MRI表现特点,提高术前诊断的准确性.方法对经手术病理证实的18例Rathke囊肿的临床和MRI资料进行回顾性总结和分析,重点观察囊肿信号、位置、形态和强化情况.结果9例囊肿位于鞍内,3例位于鞍上,6例由鞍内突入鞍上.位于鞍内和位于鞍上的囊肿呈圆形或卵圆形,冠状位囊肿居中,呈对称性分布.12例囊肿T1WI呈高信号或稍高信号,T2WI呈低信号,3例T1WI和T2WI均呈高信号,3例T1WI呈低信号,T2WI呈高信号.5例囊肿内见不强化的漂浮结节.6例鞍内突入鞍上的大囊肿出现薄壁环形强化.3例鞍内囊肿手术前连续5年行鞍区MRI复查大小、位置和信号未见变化.结论Rathke囊肿的典型信号表现为T1WI呈高或稍高信号,T2WI呈低信号.冠状位囊肿位置居中,圆形或卵圆形,呈对称分布.囊内不强化漂浮结节对Rathke囊肿与垂体腺瘤的鉴别诊断有重要价值.Objective To analyze the clinical and MRI features of Rathke clett cysts and improve the accuracy of its preoperative diagnosis.Methods Retrospective analysis was performed on the clinical and MRI data of 18 cases of Rathke cleft cyst diagnosed by postoperative pathology.The signal,location,morphology and enhancement of cyst were emphatically observed.Results 9 cases located in the intrasellar area,3 cases in the suprasellar region and 6 cases protruded from intrasellar area into suprasellar region.The cysts showed round or ovoid shape in or upon the sellar region.Cysts were in the middle and distributed symmetrically on coronal MRI scan.12 cases of cyst showed higher or slightly high T1WI signals and low T2 WI signals.cases showedbothhigh signals in Ti WI and T2WL3 cases showed low T1WI signals but high T2WI signals.Unenhanced floating nodules were observed in 5 cysts.Thin-walled enhancement was seen in 6 cases of large cysts protruded from intrasellar area into suprasellar region.3 cases received continuous MRI examination for 5 years which showed no change in the cyst size,location andsignal.Conclusion Higher or slightly high T1WI signals and low T2WI signal are the typical MRI features of Rathke clett cysts.Cysts are centered,round or ovll in shape and symmetrically distributed at coronary position.The sign of non-enhanced floating nodule in the cyst is important for the differential diagnosis of Rathke clett cyst and pituitary adenoma.

关 键 词：RATHKE囊肿 磁共振成像 

分 类 号：R742[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]