1Nicoletti CF, Passanisi M, Platania N, et al. Intramedullary spinal cystic teratoma of conus medullaris with caudal exophytic development : Case report[J]. Surg Neurol, 1994,41 : 106.
2Koen JL, McLendon RE, George TM. Intradural spinal teratoma :evidence for a dysembryogenic origin. Report of four cases[J]. J Neurosurg,1998,89(5):884-851.
3Li MH, Holtas S. MR imaging of spinal intramedullary tumors[J]. Acta Radiol,1991,32(6):505-513.