脊髓血管母细胞瘤的MR影像研究

目的　分析脊髓血管母细胞瘤的MR影像表现。方法　经手术病理证实的脊髓血管母细胞瘤 29例,男 20例,女 9例,所有病例均行MR检查,回顾分析其MR影像表现。结果　12例单发(41. 4% ), 17例多发(58. 6% ),合并颅内血管母细胞瘤 7例。MR平扫时肿瘤表现为等T1 等T2 信号 36个,等和低混杂T1 信号、等和高混杂T2 信号 16个,长T1 长T2 信号 1个。小的肿瘤倾向于等T1 等T2 信号。增强扫描后肿瘤显著强化,边界清楚。17例患者中的 21个肿瘤在T2 加权像上可见血管流空信号。27例患者中的 40个肿瘤合并有较长的脊髓空洞或囊肿。结论　脊髓血管母细胞瘤常多发或合并颅内血管母细胞瘤,肿瘤结节边界清楚,强化显著以及肿瘤相关的血管流空信号对该肿瘤的诊断最有意义。

MR Imaging Study of Spinal Hemangioblastoma

Objective To study the MRI findings of spinal hemangioblastomas.Methods The MRI findings of spinal hemangioblastomas proved pathologically in 29 cases (20 males,9 females) were retrospectively reviewed.Results The lesions were single in 12 cases (41.4%) and multiple in 17 cases(58.6%).Seven patients combined with intracranial hemangioblastomas.On unenhanced MRI,36 tumors were isointense on T 1WI and T 2WI,16 were mixed iso-hypointense on T 1WI and mixed iso-hyperintense on T 2WI,one was hypointense on T 1WI and hyperintense on T 2WI.Small hemangioblastomas tended to be isointense on T 1WI and T 2WI.After contrast injection,all tumors enhanced markedly and homogenously with clear borders.21 tumors in 17 patients had associated vascular flow voids on T 2WI.40 tumors in 27 patients were associated with syringes or cysts.Conclusion Hemangioblastomas of the spinal cord are often multiple and in company with intracranial hemangioblastomas.The marked contrast enhancements with clear borders and associated vascular flow voids are the most important signs on MRI.