目的探讨颅内神经元及混合性 神经胶质肿瘤的影像学表现，以提高认 识。方法 回顾性分析33例经手术病理证 实的神经元及混合性神经胶质肿瘤的临 床及影像学资料。结果 5例中枢神经细胞 瘤，4例位于侧脑室内，均呈囊实性，增 强扫描实性部分轻中度强化；5例胚胎发 育不良性神经上皮瘤，幕上常见，以皮层 受累为主，T1WI低信号，T2WI高信号，边 缘清楚，水肿少见，增强扫描大多不强 化；20例节细胞胶质瘤，颞叶好发，多呈 囊实性混杂信号，肿瘤实性部分轻中度强 化，2例可见钙化；3例婴儿促纤维增生 型星形细胞瘤/节细胞胶质瘤，位置较表 浅，亦表现为囊实性，轻度瘤周水肿，增 强扫描囊壁及实性部分明显强化。结论 不同类型的神经元和混合性神经胶质肿瘤 具有一定特征性的影像学表现，结合临床 病史综合分析能提高术前诊断的准确性。

Objective To investigate the imaging features of neuronal and mixed neuronalglial tumor. Methods The imaging findings and clinical history of 33 subjects with the neuronal and mixed neuronal-glial tumor proven by surgical pathology were analyzed retrospective1y. Results 5 cases of central neurocytomas, 4 cases were located in the lateral ventricle with cystic changes and mild to moderate enhancement. 5 cases of dysembryoplasia neuroepithelial tumor, mainly seen in the supratentorial brain and beneath cerebral cortex, appearing as low signal intensity on T1WI and high signal intensity on T2WI, DNT had a well-demarcated and no or only slight edema，no enhancement; 20 cases of gangliogliomas, mainly seen in the temporal lobe, with partly or mainly cystic mixed signals after contrast enhancement, 2 cases could be seen calcification. 3 cases of desmoplastic infantile astrocytoma/ganglion glioma, also showed cystic solid mixed signals, only slight edema, wall and solid part of the tumors were obviously enhancement. Conclusion Neuronal and mixed neuronal-glial tumor have some imaging characteristics and thus provide accurate preoperative diagnosis with closely combining the clinical history.