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目的提出一种LPMN的CT分型,探讨LPMN对中心椎管、侧隐窝、椎间孔的影响。方法回顾性分析29例LPMN的CT表现。结果32个软骨结节;26例单发,3例多发;中央型15个(15/32),旁中央型12个(12/32),外侧型5个(5/32);中心椎管狭窄27个,单侧侧隐窝狭窄16个,双侧侧隐窝狭窄8个,椎间孔狭窄5个;椎间盘突出、腰椎滑脱、小关节半脱位、黄韧带肥厚等伴随改变。结论CT分型能准确反映LPMN对椎管的影响,并能指导手术方式的选择,具有重要的临床价值。
Objective To propose a CT classification of LPMN and discuss the influence of LPMN on the central spinal canal, lateral recess and intervertebral foramen. Methods The CT findings of 29 patients with LPMN were retrospectively analyzed. Results There were 32 cartilaginous nodules, 26 cases were single and 3 cases were multiple. The central type was 15 (15/32), the central type was 12 (12/32) and the lateral type was 5 (5/32) There were 27 patients with stenosis, 16 patients with unilateral stenosis, 8 patients with bilateral stenosis, and 5 patients with stenosis of intervertebral foramen. Disc herniation, lumbar spondylolisthesis, subluxation of facet joint and hypertrophia of ligamentum flavum were accompanied by changes. Conclusion CT classification can accurately reflect the impact of LPMN on the spinal canal, and can guide the choice of surgical approach, has important clinical value.