颅内成血管细胞瘤的MRI特征

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。

MRI Features of Intracranial Hemangioblastoma

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.