2Seppala MT, Laltia MJJ, Sankila RJ, et al. Long-term outcome after removal of spinal neurofibroma. J Neurosurg, 1995,82:572- 577.
3Jiang L, LU Y, Liu XG, et al. Resuhs of surgical treatment of cervical dumbbell tumors : surgical approach and development of an anatomic classification system. Spine,2009, 34 : 1307-1314.
4Gottfried O, Binning M, Schmidt M. Surgical approaches to spinal schwannomas. Contemp Neurosurg, 2005,27 : 1-9.
5Asazuma T, Toyama Y. Surgical strategy for cervical dumbbell tumors based on a three-dimensional classification. Spine, 2008, 29 : 10-14.
6Yokota H, Isobe K, Murakami M, et al. Dumbbell-shaped nonpsammomatous malignant melanotic schwannoma of the cervical spinal root. Spine J,2012 ,12:14-17.
7Miyakoshi N, Hongo M, Kasukawa Y, et al. Bilateral and symmetric C1-C2 dumbbell ganglioneuromas associated with neurofibromatosis type 1 causing severe spinal cord compression. Spine J,2010 ,10:11-15.
8Kim P. Surgery of spinal nerve sclwannoma: risk of neurological deficit after resection of involved root. J Neurosury, 1989,71 : 810.
9Miyakoshi N, Hongo M, Kasukawa Y, et al. Bilateral and symmetric C1-C2 dumbbell ganglioneuromas associated with neurofibromatosis type 1 causing severe spinal cord compression. Spine J ,2010 , 10 : 11-15.
10Lot G, George B. Cervical neuromas with extradural components: surgical management in a series of 57 patients. Neurosurgery, 1997, 41:813-822.