椎管内硬膜外囊肿(spinal extradural cyst,SEC)是一种临床上十分少见的椎管内良性肿瘤,其发病率极低,仅占原发性椎管肿瘤的0.01%[1]。SEC最常发生于中下胸段,其次为腰骶椎和颈椎[2]。目前关于SEC国外文献仅有少数报道,国内亦仅有100多例记载[3]。由于其可以引起腰腿痛的临床表现与腰椎间盘突出症极其相似,因此常被误诊而得不到有效治疗。近日笔者遇到1例腰椎管内硬膜外囊肿,现结合文献资料报告如下。 Spinal extradural cyst (SEC) is a very rare clinical benign tumor of the spinal canal, its incidence is very low, accounting for only 0.01% of primary spinal tumors [1]. SEC most commonly occurs in the lower thoracic segment, followed by the lumbosacral vertebra and cervical spine [2]. At present, there are only a few reports about the foreign literature of the SEC, and there are only more than 100 records in the country [3]. Because of its clinical manifestations of lumbar and leg pain can cause very similar to lumbar disc herniation, it is often misdiagnosed and not effective treatment. I recently encountered a lumbar spinal epidural cysts, are now combined with the literature as follows.