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目的探讨脑室内中枢神经细胞瘤(CNC)的影像学特征。方法回顾性分析经手术病理证实16例CNC的CT及MRI表现。15例行MRI检查,1例行CT检查,MR检查者均增强检查。结果 16例CNC位于侧脑室12例,三脑室1例和四脑室3例。12例侧脑室CNC均附着在单侧透明隔上,肿瘤以囊实性为主且囊较小;T1、T2呈混杂信号,DWI呈高信号;增强扫描肿瘤不均匀呈轻中度强化。1例三脑室CNC呈完全囊性,增强不强化。2例四脑室CNC呈囊实性,1例呈结节状,增强后实性部分及结节强化较明显。结论侧脑室CNC的MRI表现有一定特征,术前多能够做出正确诊断;而三脑室、四脑室CNC的影像表现缺乏特征。
Objective To investigate the imaging features of intracranial central neurocytoma (CNC). Methods The CT and MRI findings of 16 cases confirmed by surgery and pathology were retrospectively analyzed. Fifteen patients underwent MRI examination and one patient underwent CT examination. MR examination was enhanced. Results 16 cases of CNC located in the lateral ventricle in 12 cases, one case of three ventricle and four ventricle in 3 cases. Twelve cases of lateral ventricle CNC were attached to the unilateral transparent septum, the tumor was mainly cystic and the capsule is small; T1, T2 were mixed signal, DWI was high signal; enhanced scan uneven tumor was mild to moderate enhancement. One case of three ventricle CNC was completely cystic, enhancement is not enhanced. Two cases of fourth ventricle CNC was cystic solid, 1 case was nodular, enhanced solid part and nodular enhancement more obvious. Conclusions The MRI of lateral ventricle has some features, which can be diagnosed correctly before operation. The features of CNC in third ventricle and fourth ventricle are lacking.