脊髓血管母细胞瘤的MRI特点  

MRI findings of spinal cord hemangioblastoma

作　　者：吴雨静[1,2] 席一斌[1] 刘海婷 印弘[1] 

机构地区：[1]第四军医大学西京医院放射科 [2]69220部队医院康复科 [3]云南省蒙自市蒙自军分区医疗所

出　　处：《放射学实践》2016年第8期717-720,共4页Radiologic Practice

摘　　要：目的:探讨脊髓血管母细胞瘤的MRI表现,提高对该病的影像诊断水平。方法:回顾性分析经临床诊断及术后病理证实的24例脊髓血管母细胞瘤患者的MRI表现。结果:24例肿瘤主要表现为颈胸段脊髓内类圆形病灶,大囊结节型19例,实性结节型5例;单发20例,多发4例;3例肿瘤的最大径≥5cm,其余病灶均<5cm;病灶在T1WI上呈低信号或等信号,T2WI上呈高信号;注射对比剂后囊性结节型肿瘤表现为壁结节明显强化而边缘不强化,实性结节型肿瘤表现为显著均匀强化。病理检查显示手术切除组织呈典型的血管母细胞瘤表现,CD31、CD34血管免疫标记阳性,Vim和S-100阳性。结论:MRI平扫及增强扫描在脊髓血管母细胞瘤的影像诊断中具有良好的诊断及鉴别诊断价值。Objective：To study the magnetic resonance imaging features of spinal cord hemangioblastoma and to im- prove diagnostic accuracy. Methods： The MRI manifestations of 24 patients with spinal hemangioblastomas proved by clinical diagnosis and postsurgical pathology were analyzed retrospectively. Results： Most of the tumors presented as oval or round lesions and located in cervical and thoracic cord. Of the 24 patients,large cyst with mural nodule was showed in 19 cases, and solid nodule was found in 5 cases; 20 had a single lesion and 4 had multiple lesions. The maximum diameter of the tumors was more than 5era in 3 cases,and less than 5cm in 21 cases. The tumors showed isointensity or hypointensity on T~ WI and hyperintensity on T2Wl. After administration of the contrast agent, hemangioblatomas were characterized by a large cystic lesion with a enhancing nodule in 19 patients and the other five were characterized by a markedly enhanced solid nodule. Pathological examination of the reseeted tumor tissue showed the typical characteristics of spinal cord hemangioblas- toma, and immunohistochemical staining revealed that CD31, CD34, Vim and S-100 were all positive. Conclusion： The con- ventional MR scan and contrast-enhanced MRI play an important role in diagnosis of spinal cord hemangioblastoma.

关 键 词：磁共振成像 脊髓肿瘤 血管母细胞瘤 诊断 

分 类 号：R445.2[医药卫生—影像医学与核医学] R739.42[医药卫生—诊断学]