<unk>  is a rare slow-growing neoplasm thought to arise from cellular remnants of the notochord. The evidence for this is the location of the tumors (along the neuraxis), the similar immunohistochemical staining patterns, and the demonstration that notochordal cells are preferentially left behind in the clivus and sacrococcygeal regions when the remainder of the notochord regresses during fetal life. In layman's terms,<unk>  is a type of spinal cancer.
Chordoma
Neurothekeoma
Brown tumor
Neuroma
Ependymoma
Germinoma
Ameloblastoma
Medulloblastoma