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The purpose of this study was to investigate the prognosis of post operative cervical spondylotic myelopathy (CSM) patients in order to determine the treatment plan.As of 1995, 365 cases were confirmed alive or dead. (life is 289 cases, death is 76 cases) The predictive number of CSM dying was calculated by age and sex to compare the mortality rate of CSM of the 365 cases with that of the normal Japanese population.The average age at operation was 53.6 and the postoperative base-line period was 12.6 years. The 76 patients of the dead group were aged between 48 and 89, with an average age of 72 years. The predictive number dying of cervical CSM was 66.8, so the stamderd mortality ratio is 1.14.

The standard treatment for spinal epidural hematoma has been prompt surgical evacuation. Emergency decompression for spinal epidural hematoma was also emphasized in our previous report. We now report four cases with natural resolution and recovery. We conclude that concervative management of spinal epidural hematoma may be apppropriate in instances in which there is minimal neurologic findings or early and sustained neurological recovery confirmed by radiological resolution of the lesion.

A case of benign hemangioendothelioma which occurred in the thoracic spinal intradural-extramedullary region, and which caused a myelopathy is reported. Benign hemangioendothelioma rarely involves the spinal cord. MRI was very useful in making the diagnosis of the spinal cord tumor. We recommend early diagnosis and surgery in such cases due to the possibility of spinal cord obstruction developing due to compression and ischemia of the spinal cord. A good post-operative result was achieved.