抄録
An intramedullary spinal cord teratoma was diagnosed in a 4-year-old boy who presented with gait disturbance. A congenital thoracic cord tumor was suspected on the basis of neurological and radiological findings. Magnetic resonance imaging demonstrated a mass extending from the C7 to Th6 levels; its heterogeneous intensity suggested a teratoma. The tumor was subtotally removed via C6-Th6 laminectomies. Histological examination showed a teratoma consisting of mature and immature tridermic elements. The postoperative course was uneventful and he was discharged without major neurological deficits.