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目的探讨血管母细胞瘤的MR特点。方法回顾分析27例经手术病理证实的小脑血管母细胞瘤的MR资料。结果血管母细胞瘤多位于小脑,可分为3型:囊结节型、囊实性型、实质型。囊结节型典型者呈“大囊小结节”征,囊结节型、囊实质型囊液呈长T1长T2信号,信号强度稍高于脑脊液。3型中结节或实性部分呈等或稍长T1、稍长T2信号,强化明显。肿瘤实性部分内部和周围见血管流空现象,且与邻近脑膜关系密切。结论MR I是一种诊断血管母细胞瘤有效的方法,但不典型者需与星形细胞瘤、转移瘤、脑膜瘤鉴别。
Objective To investigate the MR features of hemangioblastoma. Methods Retrospective analysis of 27 cases of pathologically confirmed cerebellar hemangioblastoma MR data. Results Hemangioblastoma mostly in the cerebellum, can be divided into 3 types: cystic nodular, cystic solid type, parenchymal. Cystic nodules typical were “large cystic nodules” signs, cystic nodules, capsule cystic fluid was long T1 long T2 signal, the signal intensity slightly higher than cerebrospinal fluid. Type 3 nodules or solid part was equal or slightly longer T1, slightly longer T2 signal, enhanced significantly. See the phenomenon of vascular flow inside and around the solid part of the tumor, and closely related to the adjacent meninges. Conclusion MR I is an effective method for the diagnosis of hemangioblastoma, but the atypia should be differentiated from astrocytoma, metastatic tumor and meningioma.