神经元和混合性神经胶质肿瘤的影像学表现

目的：探讨颅内神经元和混合性神经胶质肿瘤临床、影像与病理学特征。方法：对14例经手术，病理证实的颅内神经元和混合性神经胶质肿瘤资料进行回顾性分析，其中男7例，女7例，年龄6－56岁，平均33．8岁。结果：神经节神经胶质瘤8例，肿瘤位于额叶4例，颞叶1例，额颞叶2例，桥脑1例。CT为低等密度，MRT1WI为低等信号，T2WI为高信号。中枢神经细胞瘤2例，位于幕上脑室，促纤维增生性节细胞胶质瘤4例，均为囊性，MRT1WI为低信号，T2WI为高信号。结论：神经元和混合性神经胶质肿瘤具有一定的影像学特点，结合病史多数情况下可见出术前倾向性诊断。

Imaging of intracranial neuronal and mixed neuronal-glial tumours

Objective To investigate the characteristic clinical, imaging, and pathologic findings of intracranial neuronal and mixed neuronal-glial tumours. Methods The imaging findings of surgery and pathobiology proved intracranial neuronal and mixed neuronal-glial tumours in 14 cases (7 male and 7 female, ranging in age from 6-56 years; mean age 33.8 years) were retrospectively analyzed. Results Eight gangliogliomas were located in the frontal lobe (4 cases), temporal lobe (1 case),fronto- temporal lobe(2 cases), and pons (1 case). They appeared as iso-or low density on CT, iso-or low signal intensity on T 1WI, and high signal intensity on T 2WI on MR imaging. Two central neurocytomas were located in the supratentorial ventricles. Four desmoplastic gangliogliomas were seen as cystic masses, appearing as low signal intensity on T 1WI and high signal intensity on T 2WI Conclusion Intracranial neuronal and mixed neuronal-glial tumours had imaging characteristics. Combined with clinical history, it was possible to make a tendency preoperative diagnosis using CT or MR.