腰椎椎体后缘软骨结节的CT诊断

目的 探讨对于腰椎椎体后缘软骨结节(LPMN)的CT影像诊断和鉴别诊断,并对可能的发病因素进行分析.方法 对近3年来收治的29例LPMN患者的CT表现进行了回顾性分析.结果 本病的CT表现主要为:(1)椎体后上缘或后下缘类圆形骨质缺损,边缘致密硬化;(2)缺损后方有一骨块突人椎管(游离或部分与椎体相连);(3)硬膜囊及神经根受压,多伴有椎间盘突出并导致椎管狭窄.结论 CT能够明确地诊断LPMN,从而为治疗方案的确立提供可靠的根据.

CT Diagnosis of Lumbar Posterior Marginal Intraosseous Cartilaginous Nodes

Objective To discuss the CT diagnosis and differential diagnosis of lumbar posterior marginal intraosseous cartilaginous nodes(LPMN)and the possible pathogenesis.Methods CT manifestations of LPMN in 29 cases hospitalized in the last three years were analysed retrospectively.Results The mainly CT features of LPMN included:(1)Osseous defect with sclerotic margin in the posterior-superior or posterior-inferior margins of centrum;(2)Behind the defect area,bone fragments protrude into the spinal canal,totally dislocated or partially joined with centrum;(3)The dural sac and nerve root compressed accompanied by lumbar disc herniation and spinal canal stenosis.Conclusion LPMN can be definitively diagnosed by CT scan,which provides reliable basis for the treatment project.