Intradural spinal teratoma : evidence for a dysembryogenic origin : Report of four cases

摘要: Intradural spinal teratoma is a rare tumor that can be associated with dysraphic defects. Although the origin of these tumors traditionally thought to secondary primordial germ cells misplaced early in embryogenesis, pathogenesis intraspinal remains unclear. The authors present series patients whom an intradural arose at same site as developmental cord abnormality, including split malformation, myelomeningocele, and lipomyelomeningocele. It postulated lesions were result dysembryogenic mechanism not neoplastic.