31例中枢神经系统血管母细胞瘤的MRI检查结果分析  

Analysis of MRI findings in 31 cases of hemangioblastoma of central nervous system

作　　者：梁海毛 朱林 

机构地区：[1]南方医科大学附属小榄医院,广东中山528415

出　　处：《山东医药》2017年第43期64-67,共4页Shandong Medical Journal

摘　　要：目的探讨总结中枢神经系统血管母细胞瘤的磁共振成像(MRI)特点,探讨MRI检查在中枢神经系统血管母细胞瘤诊断中的应用价值。方法 31例经手术病理检查证实的中枢神经系统血管母细胞瘤患者,术前均接受MRI检查,对其MRI检查结果进行分析。结果 31例中枢神经系统血管母细胞瘤患者中,MRI检查显示肿瘤单发26例、多发5例,共37个病灶,病灶位于小脑26个、延髓3个、脊髓内8个。病灶在MRI上有四种表现类型:(1)囊腔结节型:病灶表现为"大囊小结节"或"大囊大结节";(2)囊实型:病灶呈囊实型,其内可见大片状及点片状囊变区;(3)实质型:病灶内无囊变或可见微小囊变区;(4)单纯囊型。病灶囊性部分呈长T1长T2信号(仅1例呈稍短T1短T2信号);实性病灶及病灶的实性部分T1WI呈等、稍低信号,T2WI呈等或稍高信号,其内可见点片稍短T1稍短T2信号,增强扫描实性成分明显强化,囊性成分无强化,2例部分囊壁及分隔可见强化。19个病灶内或周边可见迂曲血管影,11个病灶出现囊中囊征象。结论中枢神经系统血管母细胞瘤的MRI表现多样,以囊腔结节为主要特征,MRI检查有助于血管母细胞瘤特点的显示,有助于中枢神经系统血管母细胞瘤的术前诊断。Objective To investigate the magnetic resonance imaging（ MRI） features of central nervous system hemangioblastoma and to explore the value of MRI in the diagnosis of central nervous system hemangioblastoma. Methods Thirty-one patients with central nervous system hemangioblastoma confirmed by surgical pathology underwent MRI examination before the operation,and the results of MRI examination were analyzed. Results There were 26 cases with solitary tumors and 5 cases with multiple tumors. In the 37 lesions,26 were located in the cerebellum,3 in the medulla,and 8 in the spinal cord. According to the MRI characteristics,the tumors were divided into four types： cyst-nodule type,cystic-solid type,solid type,and pure cyst type. Cystic nodular type included large cystic small nodules and large cystic large nodules. Large and punctate cystic lesions could be seen in the cystic and solid type lesions. There was no cystic or small cystic in solid type. The cystic portion of the lesion showed long T1 and long T2 signals（ except for 1 case with slightly shorter T1 and short T2 signals）. Solid lesions and lesions of the solid part of T1 WI showed equal or low signal,T2 WI showed equal or slightly high signal. When we enhanced scanning,the solid components were significantly enhanced,while the cystic components were not. The enhancement was found in part of the cystic wall and septum of 2 cases. Blood vessels were seen in the 19 lesions. Eleven lesions showed the characteristics of cyst-in-cyst. Conclusions The cystic nodules are the main manifestations of MRI of central nervous system hemangioblastoma. MRI examination helps to show the characteristics of hemangioblastoma and contribute to the preoperative diagnosis of central nervous system hemangioblastoma.

关 键 词：血管母细胞瘤 中枢神经系统肿瘤 中枢神经系统血管母细胞瘤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R73[医药卫生—诊断学]