<正>Dear Editor,Glial tumors(80%), astrocytomas, and ependymomas are the most frequent histological types of intramedullary spinal cord tumors(Bansal et al., 2013). Intramedullary tumors spanning three or more vertebral body levels are considered multi-segment intramedullary spinal cord tumors and have a much lower incidence than less involved tumors(Wang et al., 2012). We prospectively studied 81 consecutive patients who underwent resection of intramedullary spinal cord