Chordoma Underlying Cause
The exact cause for chordoma is unknown. They arise from cells (notochord) left over during development as a fetus. They can occur inside the skull, as well as in the lower spinal cord.
- Fourney DR, Gokaslan ZL. Current management of sacral chordoma. Neurosurg Focus. 2003 Aug 15;15(2):E9. 
- Mendenhall WM, Mendenhall CM, Lewis SB, Villaret DB, Mendenhall NP. Skull base chordoma. Head Neck. 2005 Feb;27(2):159-65. 
- Sundaresan N, Boriani S, Rothman A, Holtzman R. Tumors of the osseous spine. J Neurooncol. 2004 Aug-Sep;69(1-3):273-90.