A Case of Dumb-bell tumor of the Thoracic Spinal Cord

The dumb-bell tumors are classified into several groups in accordance with constricting structures and their localization. We have experienced a case of thoracic spinal cord tumor that had developed into the vertebral body and the thoracic space through the intervertebral foramen. This case may be a mixed type of the foramen constriction group and the vertebral body eroding group.