颅内血管母细胞瘤MRI影像分析

目的:分析血管母细胞瘤的MRI影像特征。材料与方法:32例经手术病理证实的颅内血管母细胞瘤,均行MRI检查。结果:肿瘤发生于小脑者占88%。囊性者23例,除1例囊腔与结节大小相近外,均表现为大囊、小结节,壁结节邻近软脑膜并异常对比强化;实性者9例,除1例轻度不均匀强化外,其余8例实质部分均匀或不均匀显著强化,2例实质内见囊变区。14例肿瘤实质部分见血管流空信号影,10例瘤周见异常强化的血管影,5例为多灶病例,10例瘤周轻~中度水肿。结论:多数血管母细胞瘤的MRI表现具有一定的特征性,有利于病变的定性诊断。

MR imaging analysis of intracranial hemangioblastoma

Objective: To analyse MR imaging features of hemangioblastoma. Materials and Methods: MRI examination were performed in 32 cases of hemangioblastoma proved by surgery and pathology. Results: The percentage of tumors which located in the cerebellum was 88%. Cystic type were shown in 23 cases with the characteristics of big cyst and small mural nodule, except in one case which cyst and nodule were of the same size. The mural nodules were obviously enhanced on contrast scan and located close to the pia mater. Parenchymatous type were shown in 10 cases with obvious uniform or non-uniform enhance in 9 cases, slightly non-uniform enhance in 1 case, partly cystic in 2 cases. Among 32 cases, blood flow void signals showed within solid neoplastic components in 14 cases, unusual vascular sign peritumor edema near the tumor in 10 cases, multiple nidus in 5 cases, slight or moderate dropsy in 10 cases. Conclusion: Most hemangioblastoma has specific appearances in MRI which are useful for diagnosing.