Cyber Knife Therapy for Cervical Spine and Spinal Cord Tumor

We report two cases of Cyber Knife Therapy for cervical spine and spinal cord tumor. One of the patients was a 38-year-old man, suffering from bilateral upper and lower extremity numbness, spastic gait and finemove disturbance. MRI showed intramedullary spinal cord tumor at the C2 vertebral level for which Cyber Knife Therapy was performed. After the therapy, the tumor did not become small, but myelopathy improved.The other patient was a 54-year-old man complaining of neck pain and dysphagia. MRI revealed a large mass which originated from the C2 vertebral body. He was diagnosed with Chordoma from biopsy, and placed on Cyber Knife Therapy, but the mass size did not change and his symptoms deteriorated.