中枢神经细胞瘤CT、MRI的诊断与鉴别诊断

目的研究中枢神经细胞瘤的CT、MRI特征性表现.方法回顾性分析10例经病理证实为中枢神经细胞瘤患者的CT、MRI影像学资料.结果中枢神经细胞瘤位于单侧或双侧侧脑室前部,有时累及三脑室,肿块囊变常见,钙化和出血也可见,CT上可以为等或略高密度.MRI T1WI可以为等、稍低或稍高信号,T2WI为等或稍高信号,增强扫描部分或全部轻中度强化,没有或轻度脑水肿或不累及脑实质.结论中枢神经细胞瘤的CT、MRI特征性表现可以与侧脑室其它肿瘤相鉴别,是诊断中枢神经细胞瘤的重要方法.

Diagnosis and differential diagnosis of central neurocytoma with CT and MRI

Objective To probe features of central neurocytoma in CT and MRI.Methods Ten pathologically proved central neurocytoma cases were analyzed of theCT and MRI features. Results Central neurocytoma lesions were located in thefrontal part of lateral ventricle, either unilateral or bilateral, sometimes in the thirdventricle. Mass or cyst lesions were frequent, and calcification and bleeding could beseen, displaying equal or higher density. MRI T1WI could be equal, slightly low or slighthigh signal, T2WI could be equal or slightly higher signal. Parts undergoing enhanced scancould be enhanced fully, indicating there was no or only slight edema in brain, or absence ofparenchyma involvement. Conclusion The imaging features of central neurocytomahelp to differentiate the neurocytoma from other tumors residing in lateral ventricle,serving as an important method in diagnosis of central neurocytoma.