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目的:通过分析中枢神经系统血管母细胞瘤的MRI表现,探讨MRI对中枢神经系统血管母细胞瘤的诊断价值。材料与方法:回顾性分析24例经手术病理证实为血管母细胞瘤的MRI表现。结果:本组24例患者18例单发,6例多发,共计36个病灶,小脑半球22个,小脑蚓部4个,小脑扁桃体2个,延髓2个,桥小脑角区2个,脊髓4个;MR表现囊性型22例,其中囊伴结节型21个,单纯囊肿型1个,实质型14个,单纯实性肿块型1例,肿块伴囊变1例,实性结节型12个,实性结节型1例单发,5例多发;肿瘤囊性部分呈长T1长T2信号,增强后无强化,实性部分或壁结节呈等长T1等长T2信号,增强均呈明显强化;6例患者行弥散加权成像(DWI),病灶囊性部分呈低信号影,实性部分呈等低信号影;2例Von-Hipple-Lindau综合征。结论:血管母细胞瘤的MRI增强表现具有一定的特征性,能为术前诊断提供可靠的诊断依据,结合DWI序列有助于鉴别诊断。
Objective: To investigate the MRI diagnosis of central nervous system hemangioblastoma by analyzing the MRI findings of central nervous system hemangioblastoma. Materials and Methods: A retrospective analysis of 24 cases of pathologically confirmed hemangioblastoma MRI findings. Results: Twenty-four patients in our study had 18 cases with single disease and 6 cases with multiple lesions, including 36 lesions, 22 cerebellum hemispheres, 4 cerebellar vermis, 2 cerebellar tonsils, 2 medulla oblongata, 2 cerebellopontine angle areas and 4 spinal cord MR manifestations of cystic type in 22 cases, including 21 cases with cystic nodules, simple cyst type 1, 14 in essence, simple solid mass in 1 case, mass with cystic degeneration in 1 case, solid nodules 12 cases of solid nodules in 1 case of single, multiple in 5 cases; cystic tumor was long T1 long T2 signal, no enhancement after enhancement, solid part or wall nodules were equal length T1 isometric T2 signal, enhanced (DWI). The cystic part of the lesion showed low signal intensity and the solid part showed low signal intensity. Two cases of Von-Hipple-Lindau syndrome were observed. Conclusion: The enhancement of MRI of hemangioblastoma has certain characteristic, which can provide a reliable diagnosis basis for preoperative diagnosis. Combined with DWI sequence is helpful to differential diagnosis.