颅内成血管细胞瘤的MRI特征

MRI Features of Intracranial Hemangioblastoma

目的:探讨MRI在颅内成血管细胞瘤诊断中的价值。方法:对21例经手术及病理证实的颅内成血管细胞瘤患者的临床及MRI资料进行回顾性分析。结果:21例中术前正确诊断18例(85.7%),误诊3例(14.3%)。9例病灶位于小脑半球,7例位于小脑下蚓部,3例位于桥脑或脑干,2例位于大脑半球。14例为大囊小结节型或囊腔结节型(66.7%),主要MRI表现为囊性病灶和附壁结节,增强后瘤结节明显强化;2例单纯囊型(9.5%),MRI表现为囊性病灶,囊内无附壁结节,无明显强化;5例为实质型(23.8%),表现为实质性肿块,其内或周围可见流空血管,增强后肿瘤明显强化。结论:成血管细胞瘤MRI表现具有相对特征性,MRI对于颅内成血管细胞瘤的正确诊断具有重要价值。

Objective： To study the value of MRI in the diagnosis of intracranial hemangioblastoma. Methods： The clinical and MRI data of 21 patients with surgery and pathology proved hemangioblastoma were reviewed and analyzed retrospectively. Results： Of these 21 cases, tumors located at cerebellar hemisphere （n= 9）, vermis （n= 7）, pons and brain stem （n= 3） and cerebral hemisphere （n= 2）. The MRI findings were cystic tumors （n= 14,66.7%） mainly appeared as cystic lesion with a small intra-mural nodule and the nodule enhanced markedly after contrast administration ; simple cystic tumor （n= 2,9.5% ） appeared as a cystic lesion without intramural nodule and enhancement as well; solid lesion （n = 5,23.8%） which showed solid mass with prominent intra- or peri-tumoral flow void blood vessels,and the tumor enhanced markedly and homogeneously. Conclusion： Hemangioblastooma had certain characteristic MRI features, and MRI plays an important role in the diagnosis of intracranial hemangioblastoma.