Objective To investigate the CT image features of lumbar posterior marginal cartilaginous nodes (LPMN). Methods Clinical data of CT images of 85 patients with LPMN in our hospital were retrospectively analyzed. Results Clinical manifestations of 85 patients were lumbar and leg pain, numbness and weakness in both lower extremities including 56 cases of intermittent claudication. By the first CT examination 79 patients were diagnosed as having LPMN, and 6 patients were first misdiagnosed and then were confirmed by rechecking CT or rereading of the film. The herniated nucleus pulposus and bone mass in these patients were excised, and histopathologic findings confirmed the diagnosis of LPMN. Conclusion The main causes of misdiagnosis are irrelevant scanning technology and insufficient understanding of LPMN. To fully understand the specific CT manifestation of LPMN may minimize misdiagnosis rate.%目的 探讨腰椎椎体后缘软骨结节(LPMN)的CT影像特征,以避免或减少误漏诊.方法 对我院收治的85例LPMN的CT影像学资料进行回顾性分析.结果 本组85例临床表现为腰腿疼痛,双下肢麻木、无力,56例出现间歇性跛行.行CT检查首次确诊LPMN 79例,误漏诊6例,后经复查CT或重新阅片确诊.本组85例均经手术摘除突出髓核及骨块,病理结果进一步证实LPMN诊断.结论 CT扫描技术运用不当、对本病认识不足是本组误漏诊的主要原因,充分认识本病的特征性CT表现,可最大程度减少误漏诊.
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