脑室内中枢神经细胞瘤的MRI影像学表现  

MRI characteristics of central neurocytomas

作　　者：沈萍 胡春洪[1] 王希明[1] 包婕[1] SHEN Ping;HU Chunhong;WANG Ximing;BAO Jie(Department of Radiology,the First Affiliated Hospital of Soochow University,Suzhou 215006,China)

机构地区：[1]苏州大学附属第一医院放射科,江苏苏州215006

出　　处：《实用放射学杂志》2018年第10期1499-1501,共3页Journal of Practical Radiology

摘　　要：目的 总结中枢神经细胞瘤（CNC）的MRI影像学特征。方法 回顾性分析11例经手术病理证实的脑室内CNC的临床及MRI影像学特征，分析其性别、发病年龄、部位、大小、边界、信号特征、强化程度等特点。结果 11例患者平均年龄（34±12）岁（22~58岁），其中男6例，女5例，肿瘤位于侧脑室9例，三、四脑室各1例，肿瘤较大，境界清楚，呈分叶状（n=7）或类圆形（n=4），囊实性（n=8）多见，囊数目较多、大小不等，呈“肥皂泡”样改变。T1WI大多数病灶显示等或稍低信号，T2WI为等或稍高信号，扩散加权成像（DWI）多呈高信号（n=9）。11例肿瘤内6例出现血管流空及与侧脑室间的牵拉，出血（n=3）及钙化（n=1）少见，T1增强后病灶多呈明显不均匀强化（n=6），9例脑室系统可见不同程度扩张。结论 位于侧脑室内的CNC结合临床及MRI典型特征可作出正确诊断；位于侧脑室以外的CNC缺乏特征性，确诊需依靠病理学诊断。Objective To discuss the MRI features of central neurocytomas（CNC）.Methods MRI data in 11 cases with CNC confirmed by surgery and pathology were analyzed retrospectively.Sex, age ; location of predilection, size, the border, MRI signal characteristics and enhancement pattern were analyzed.Results 11 cases with an average age of （34±12） years （22-58 years old） ,6 males and 5 females were included.The tumors were located in lateral ventricle （n= 9）, third ventricle （n= 1） and fourth ventricle （n= 1 ）.The lesion usually had a clear border and a big size,relatively round （n= 7） or lobulated （n= 4）.In 8 cases, tumors presented solid-cyst combination, which contained clusters of cysts of varying size and ＂soap bubble＂ appearance.Most of the tumors showed isointensity or slight hypointensity signal on T1 WI and isointensity or slight hyperintensity signal on T2 WI, diffusion weighted imaging （DWI} showed hyperintensity signal in 9 cases.Six cases showed flow void and attachment to the wall of ventricle. Calcification （ n= 1 ） and bleeding （ n = 3 ） were rare. Most tumors had significant inhomogeneous enhancement on T1 WI.The ventricles showed different degrees of expansion in 9 cases.Conclusion The CNC located in the lateral ventricle can be diagnosed correctly via clinical and MRI features,the CNC located outside lacks definite characteristics and should be correlated with that of pathological results for a definitive diagnosis.

关 键 词：中枢神经细胞瘤 磁共振成像 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]