摘要
目的探讨中枢神经细胞瘤(cNc)的MRI表现特征。方法南方医科大学珠江医院自2007年1月至2010年1月行手术治疗CNC患者13例,术前均行MRI平扫及增强扫描.其中1例并行术前CT平扫及增强扫描。总结分析患者的临床、MRI资料及病理表现。结果肿瘤最大径约3.2-8.5cm,12例CNC位于侧脑室内孟氏孔区,l例位于左颞顶叶脑实质内.均表现为分叶状的实体瘤,平扫以等T1、稍长T2信号为主,信号不均匀,可见多发、散在分布的小囊变区,表现为更长T1、更长T2信号;6例T2WI上可见流空血管影;8例见斑点状稍短T1信号:增强扫描肿瘤呈不均匀显著强化,6例可见强化肿瘤血管;病理表现为灶性钙化,可见典型无细胞纤维岛。结论脑室内CNC具有特征性的发病部位,结合患者发病年龄、MRI平扫及增强扫描表现多可做出正确诊断;脑室外CNC定性诊断较困难。
Objective To evaluate the MRI features of central neurocytoma (CNC). Methods Thirteen patients with CNC (7 males and 6 females, aged 18-28), admitted to our hospital from January 2007 to January 2010, were chosen; preoperative plain and contrast enhanced MR/scans were performed on these 13 patients and 1 also received CT scan of these patients were retrospectively analyzed. The clinical and imaging data and pathological features Results The largest tumor enjoyed its maximum diameter of 3.2-8.5 cm; the CNC in 12 patients located at the lateral ventricle and that in 1 patient at the parenchyma of the left frontal and temporal lobes. Lobulated solid tumors were noted in these lesions, showing T1 isointense and T2 hyperintense in MRI; some multiple, scattered cystic lesions showed stronger T1 and T2 signal than the former ones; vascular "flow void" signal was shown in 6 patients in T2WI, and slightly weak T1 signal was shown in 8. All the tumors demonstrated inhomogeneous enhancement and the tumor vessels in 6 patients were noted under contrast Mill. Focal calcification was found. Conclusion CNC in the lateral ventricle enjoys typical location; considering the age of patients, non-contrast and contrast MRI findings, correct diagnosis of CNC can be made; however, CNC outside the lateral ventricle is hard to diagnose.
出处
《中华神经医学杂志》
CAS
CSCD
北大核心
2011年第4期417-420,共4页
Chinese Journal of Neuromedicine
关键词
中枢神经细胞瘤
MRI
侧脑室内肿瘤
Central neurocytoma
Magnetic resonance imaging
Tumor in the lateral ventricle