脊髓血管母细胞瘤MRI诊断

目的:探讨脊髓血管母细胞瘤磁共振成像(MRI)影像学特征。方法:回顾性分析经手术病理证实12例脊髓血管母细胞瘤的MRI表现。结果:在12例中,病灶位于颈髓7例,胸髓3例,颈胸段、胸腰段水平各1例。其中3例为多发灶,1例合并脑内血管母细胞瘤。MRI表现:受侵脊髓局限性增粗,与正常脊髓信号相比,T1WI呈等低信号结节性肿块,其中1例伴斑片状高信号(因出血);T2WI为混杂高信号;增强扫描,肿瘤结节显著强化,边界清晰。在T2WI或增强扫描上,见特征性瘤内或瘤周迂曲的畸形血管流空信号9例,肿瘤上下继发性脊髓空洞或囊肿10例。结论:MRI检查是诊断脊髓血管母细胞瘤的有效手段,有助于诊断和鉴别诊断。

MRI diagnosis of spinal cord hemangioblastoma

Objective:To explore the MRI characteristics of hemangioblastoma of the spinal cord.Methods:MRI appearance of 12 spinal cord hemangioblastoma patients with surgically and pathologically proved were analyzed restrospectively.Results:In the 12 cases of spinal cord hemangioblastomas,3 case had multiple lesions,one patient also had intracranial hemangioblastoma.The lesions were located in cervical spinal cord in 7 cases,thoracic spinal cord 3 cases,cervical thoracic segement in 1 case,thoracic lumbar segement in 1 case.MRI appearance:the signal on T1WI of the tumors showed iso-hypointense in contrast to the normal spinal cord,higher intensity(n=1)than blood;and mixed hyper-hypointense signal on T2WI.After enhancement,nodular tumors showed marked enhancement with distinct border on T1WI.The blood flow-void-sign(n=11)within and around the masses was seen on T2WI or on contrast scans.There were secondary syringomyelia or cystic changes,above or below the tumor in 10 cases.Conclusion:MRI is an efficient method in the diagnosis of spinal cord hemangioblastoma.It plays an important role in the diagnosis and differential diagnosis of hemangioblastoma.