摘要
目的:探讨中枢神经细胞瘤(CNC)的MRI表现特点。方法:回顾性分析10例经手术病理证实的CNC患者的MRI资料,7例平扫加增强扫描,2例直接增强扫描,1例平扫。结果:肿瘤位于双侧侧脑室体部内3例,右侧脑室体部4例,左侧侧脑室1例,第四脑室及右侧小脑半球1例,小脑蚓部1例。8例侧脑室部位肿块侵及额叶3例;T_1WI呈等低信号3例,等高低混杂信号3例,低信号2例;T_2WI呈等高信号5例,等高低混杂信号2例,高信号1例;DWI呈高信号2例,低信号1例;增强扫描后3例轻度强化,3例呈中度强化,3例呈轻～中度强化,1例未行增强扫描;2例侧脑室外CNC术前均误诊为其他肿瘤。结论:侧脑室CNC有较特征性的MRI表现,术前可能提示诊断,脑室外CNC术前诊断困难大,确诊有赖于病理检查结果。
Objective： To study MRI features of central neurocytoma （CNC）. Methods： MRI findings in 10 cases with pathologically proved central neurocytoma were retrospectively analyzed. There were 7 cases examined by plain and enhancement,2 cases by enhancement only, 1 case by non-enhancement MRI. Results： The masses were located in the body of bilateral ventricles in 3 cases, the right body of lateral ventricle in 4 cases, the left lateral ventricle in 1 case,the fourth ventricle and right cerebellar hemisphere and the vermis cerebellar in 1 case, respectively. There were 3 of 8 cases with lateral ventricle mass invaded into frontal lobes; 3 masses showed iso- and hypo-intensity signal, 3 heterogeneous mixed signal, 2 hypo-intensity on T1WI, 5 cases showed iso- and hyper-intensity signal,2 cases heterogeneous signal, 1 case hyper-intensity on T2WI. On DWI, 2 cases showed high signal, 1 case low signal. The masses of 3 cases showed mild inhomogeneous enhancement, 3 cases moderate inhomogeneous enhancement, 3 cases mild and moderate homogeneous enhancement, and 1 case with no enhancement; 2 cases with non-lateral ventricle CNC were misdiagnosis as other tumors preoperatively. Conclusion： Central neurocytoma in the latral ventricle has some characteristic MRI findings, which may suggest the diagnosis preoperatively. Diagnosis of non-lateral ventricle central neurocytoma depends on pathological examination post-operatively.
出处
《中国中西医结合影像学杂志》
2011年第2期115-117,122,共4页
Chinese Imaging Journal of Integrated Traditional and Western Medicine
关键词
中枢神经细胞瘤
磁共振成像
central neurocytoma
magnetic resonance imaging
