椎管内神经鞘膜瘤常见,但位于椎间孔外的神经鞘膜瘤却较为少见,文献报道更少。腰骶神经根鞘膜瘤的临床表现与腰椎间盘突出症、腰骶神经节异位畸形有很多相似之处,鉴别存在一定的难度,易引起误诊。我科收治1例椎间孔外神经根鞘膜瘤,报告如下。 Neurovascularity of the spinal canal is common, but located outside the foraminal nerve sheath tumors are relatively rare, less reported in the literature. The clinical manifestations of lumbosacral nerve root sheath tumor and lumbar disc herniation, lumbosacral ganglion ectopic deformity has many similarities, there are some difficulties in the identification, easy to cause misdiagnosis. I received 1 cases of extraforaminal nerve root sheath tumor, the report is as follows.