腰椎椎体后缘软骨结节的CT诊断与临床意义分析

CT Diagnosis and Its Clinical Implications of Lumbar Posterior Marginal Intraosseous Cartilaginous Node

目的提高对腰椎椎体后缘软骨结节的认识,探讨相关的发病因素及临床意义。方法收集46例腰椎椎体后缘软骨结节所致腰椎管狭窄症的CT、临床表现进行综合分析。结果本病的3项主要CT表现为①腰椎椎体后缘类圆形骨质缺损,边缘致密硬化。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,可伴有腰椎间盘突出。结论CT扫描对腰椎椎体后缘软骨结节具有首肯诊断价值。

Objective： To improve the knowledge of lumbar posterior marginal intraosseous cartilaginous node （LPMN） and discuss its ralated etiological factors. Methods： The CT scanning and the clinical manifestation of 46 cases with lumbar spinal canal stenosis caused by LPMN were analysed. Results： Three major CT findings were： （1）a defect in the posterior superior margin of the affected vertebral body,with sclerotic margin; （2）posterior to the defect, a bony fragment was seen protruding into the spinal canal;（3）compression of the dural sac and nerve root. Conclusion.. The CT scanning has definite diagnositic value for the lumbar posterior marginal intraosseous cartilaginous node.