小脑实质性血管网织细胞瘤的MR诊断

MRI diagnosis of solid hemangioblastoma of cerebellum

目的探讨小脑实质性血管网织细胞瘤的磁共振(MR)特点。方法回顾性分析16例经手术病理证实的小脑网织细胞瘤患者的MR资料。结果16例患者中2例多发,共19个病灶位于左侧小脑半球11个病灶,右侧7个,小脑蚓部一个,T1WI病灶为等信号3个,低信号14个,2个病灶为高信号;T2WI均为高信号或明显高信号,10个病灶内部和周围见血管流空现象;所有病灶显示轻重度水肿;14个病灶与临近脑膜关系密切;19个病灶均见明显强化。结论小脑实质性血管网织细胞瘤MR在T2WI的信号强度、强化方式及血管流空等方面有一定的特征。

Objective To study MRI characteristics of solid hemangioblastoma in cerebellum. Methods MRI of 16 cases of solid hemangioblastoma with 19 lesions confirmed by surgery and pathology were analyzed retrospectively. Results Among the 16 cases, 2 were with multiple lesions and 14 with solitary lesions. 11 lesions located in left cerebellum hemisphere, 7 lesions in right cerebellum hemisphere and one lesion in vermis cerebellum. Three lesions showed isointense, 14 lesions slightly hypointense and 2 lesions hyperintense on T1W1. All of the lesions showed markedly hyperintense on T2W1. Blood vessel flow void within or around lesions was seen in 10 eases. Mild to severe surrounding edema was seen in all of the lesions. A close relation with adjacent meninges was seen in 14 lesions. The pattern of strong enhancement was seen in all cases. Conclusion The MR1 of solid hemangioblastoma of cerebellum has some characteristics in the signal intensity of T2W1, pattern of enhancement and the flow void sign within or around the tumors.