2. Dang L, Liu X, Dang G, Jiang L, Wei F, Yu M, et al. Primary tumors of the spine: a review of clinical features in 438 patients. J Neurooncol 121:513-520. 2015.
3. Emohare O, Stapleton M, Mendez A. A minimally invasive pericoccygeal approach to resection of a large presacral schwannoma: case report. J Neurosurg Spine 23:81-85. 2015.
4. Ganju A, Roosen N, Kline DG, Tiel RL. Outcomes in a consecutive series of 111 surgically treated plexal tumors: a review of the experience at the Louisiana State University Health Sciences Center. J Neurosurg 95:51-60. 2001.
5. Hébert-Blouin MN, Sullivan PS, Merchea A, Léonard D, Spinner RJ, Dozois EJ. Neurological outcome following resection of benign presacral neurogenic tumors using a nerve-sparing technique. Dis Colon Rectum 56:1185-1193. 2013.
6. Hughes MJ, Thomas JM, Fisher C, Moskovic EC. Imaging features of retroperitoneal and pelvic schwannomas. Clin Radiol 60:886-893. 2005.
9. Klimo P Jr, Rao G, Schmidt RH, Schmidt MH. Nerve sheath tumors involving the sacrum. Case report and classification scheme. Neurosurg Focus 15:E122003.
12. Li Q, Gao C, Juzi JT, Hao X. Analysis of 82 cases of retroperitoneal schwannoma. ANZ J Surg 77:237-240. 2007.
13. Makni A, Fetirich F, Mbarek M, Ben Safta Z. Presacral schwannoma. J Visc Surg 149:426-427. 2012.
15. Santiago C, Lucha PA. Atypical presentation of a retrorectal ancient schwannoma: a case report and review of the literature. Mil Med 173:814-816. 2008.
19. Wei G, Xiaodong T, Yi Y, Ji T. Strategy of surgical treatment of sacral neurogenic tumors. Spine (Phila Pa 1976) 34:2587-2592. 2009.
20. Won TY, Oh JY, Cho CB, Cho CK. Unexpected disseminated intra-vascular coagulation after venous injury during anterior lumbar interbody fusion: a case report. Korean J Spine 7:111-115. 2010.