脊柱转移性肿瘤的磁共振成像

MRI Imaging of Spinal Metastases

本文分析了98例经磁共振(MR)检查的脊柱硬膜外肿瘤患者,转移瘤76例,多发性骨髓瘤8例,淋巴瘤14例。所有98例MR图像均显示椎骨信号异常,其中6例X线平片阴性;85例显示椎管内硬膜外软组织肿块伴蛛网膜下腔和脊髓受压;71例有椎旁软组织肿块。MR能全面评价脊柱转移性病变的范围。对多个椎体受累、脊髓造影多节段受阻和早期椎体转移的患者,MR更显其优越性。

The MR examination in 98 patiensts with spinal extradural tumors were analyzed. Of them, 56 cases had histopathologic diagnosis in the area of lesions. In 42 cases, the diagnosis is based on histroy of the primary tumors in the body elsewhere. 76 patients were diagnosed as metastases, 8 multiple myeloma and 14 spinal lymphoma. All of 98 patients MR imaging showed abnormal signal in the diseased vertebral bodies, in which 6 had equivocal conventional radiography; 85 had extradural mass with the compression of subarachnoid space and the cord; 71 had paravertebral mass. MR imaging is the best modality for evaluating entirly spinal metasta-tic lesions, particularly in the early vertebral impingement and multiple levels of myelo-graphic block.