Chordoma arises from all the following EXCEPT
Chordoma - This rare malignant tumor arises from primitive notochordal remnants.
It affects young adults and usually presents as a slow growing mass in the sacrum. However it may occur elsewhere along the spine (cervical spine is most common)
a. Most common presentation is backache
b. X-ray showes - radiolucent lesion, bone destriction is the only hallmark feature of this tumor
Treatment - complete excision with radiotherapy