脊椎转移瘤的MR征象分析(附32例报告)

Signs Analysis of Magnetic Resonance Imaging of Spinal metastasis(32 cases report)

目的 分析脊椎转移瘤的ＭＲＩ表现，探讨其影像学特征性改变。方法 分析３２例经病理和临床证实的脊椎转移瘤的ＭＲ表现，分别观察其形态改变，椎体骨髓信号特点、类型，骨皮质破坏与椎旁软组织肿块及跳跃征。结果３２例脊椎转移瘤共８２个椎体受累，１９个椎体病理性骨折，１６个椎体后缘骨皮质弧形膨隆。ＭＲ信号改变椎体局灶型４４个，弥漫型３６个，斑片型２个，椎旁肿块１７例，椎弓破坏１３例，跳跃征１５例。结论 局灶性与弥漫型信号改变是脊椎转移瘤椎体常见信号异常，跳跃征、椎体后缘骨破坏与肿块是其特征性表现，多征象综合分析是正确诊断本病的关键。

Purpose To analyze magnetic resonance imaging(MRI) appearances of spinal metastasis and to research their charac- teristic imageological changes. Materials and methods Imageological appearances of 23 cases with spinal metastasis that were proved by chinical pathology were analyzed. Morphological changes, signal characters and pattern of vertebral body medullae, bone cortical destruction, soft tissue masses of para - spinal, skipping sign of these spinal metastasis were observed Results there were 82 involvements of vertebral bodies, 19 pathological fractures of vertebral bodies, 16 bone cortical bulgings of posterior edge of vertebral bodies in 32 cases. MR signal of vertebral body were 44 focal pattern, 36 diffuse pattern, 2 spot pattern. Para - spinal masses were 17cases, destruction of vertebral arch were 13 cases and skipping sign were 15 cases. Conclusions Focal and diffuse MR signal abnormality were common MR signal changes. Skipping sign, bone destruction of posterior edge of vertebral body and para - spinal mass were characteristic manifestations of spinal metastasis. The key of diagnosing spinal metastasis was comprehensive analyzing of MRI imageological signs of spinal metastasis.