论文部分内容阅读
目的分析儿童小脑毛细胞星形细胞瘤的MRI特点,以提高对此肿瘤的认识。方法回顾性分析经手术病理证实的15例小脑毛细胞型星形细胞瘤患儿的临床资料及影像资料,研究其T1 WI、T2 WI、FLA IR和增强后的MRI表现,MRI表现为实性型、囊实型、壁结节型、单纯囊肿型。结果毛细胞星形细胞瘤的MRI表现有如下特点:发现病灶在小脑蚓部9例、小脑半球6例。MRI表现:壁结节型(囊性病变为主伴壁结节)8例,囊实型4例,单纯囊肿型(无壁结节或实性肿块)1例,实性型(实性肿块为主伴有或不伴有囊性改变)2例。肿瘤的活性部分于FLAIR和T2加权呈高信号,增强后明显强化。T1加权肿瘤壁结节及实性部分呈稍低信号或等信号,肿瘤囊性部分呈均匀低信号。结论小脑毛细胞星形细胞瘤有比较典型的MRI特点,结合患者的年龄及临床发病特点,有助于其术前诊断。
Objective To analyze the MRI features of cerebellar cerebellar astrocytoma in children in order to improve the understanding of this tumor. Methods The clinical data and imaging data of 15 patients with cerebellar astrocytoma of cerebellum confirmed by surgery and pathology were retrospectively analyzed. The T1 WI, T2 WI, FLA IR and MRI findings after MRI were retrospectively analyzed. Type, capsule real type, wall nodular, simple cyst type. The results of hair cells astrocytoma MRI showed the following characteristics: found in the cerebellar vermis in 9 cases, 6 cases of cerebellar hemispheres. MRI manifestations were: nodular (cystic lesions of the main wall nodules) in 8 cases, cystic solid in 4 cases, simple cyst type (no wall nodules or solid mass) in 1 case, solid type Mainly with or without cystic changes) in 2 cases. The active portion of the tumor was hyperintense with FLAIR and T2-weighted enhancement after enhancement. T1-weighted tumor wall nodules and solid part was slightly lower signal or equal signal, cystic parts of the tumor showed a uniform low signal. Conclusions Cerebellar hairy astrocytoma has typical MRI features. Combining the characteristics of patients’ age and clinical features, it is helpful to the preoperative diagnosis.