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目的 总结腰椎椎体后缘骨内软骨结节 (LPMN)所致腰椎管狭窄症临床、影像诊断 ,探讨有关的发病因素。方法 对经手术证实的 16例PLMN所致腰椎管狭窄症的临床表现、影像学特征、手术方式进行回顾性分析总结。结果 典型的影像改变为 :( 1)椎体后上缘类圆形骨质缺损 ,边缘较致密硬化 ;( 2 )缺损后方有一骨块突入椎管 (游离或部分与椎体相连 ) ;( 3)硬膜囊及神经根受压 ,可伴有椎间盘突出。结论 影像学检查能明确诊断腰椎椎体后缘骨内软骨结节 (LPMN)所致腰椎管狭窄症 ,并为制订治疗方案提供可靠依据。
Objective To summarize the clinical and imaging diagnosis of lumbar spinal stenosis caused by LPMN and explore the related factors. Methods The clinical manifestations, imaging features and surgical procedures of 16 cases of lumbar spinal stenosis caused by PLMN proved by operation were retrospectively analyzed and summarized. Results The typical changes of the images were as follows: (1) a circular bone defect on the posterior superior vertebra with a harder edge; (2) a bone block protruding into the spinal canal (free or partially connected to the vertebral body) Dural sac and nerve root compression, may be associated with disc herniation. Conclusion Imaging examination can clearly diagnose lumbar spinal stenosis caused by LPMN and provide a reliable basis for the development of treatment.