Extradural tumors reside outside of the coverings of the nerves. They commonly press in onto the nerves. These usually are cancer metastases.
Usually extradural metastases are multiple and are treated nonsurgically with chemotherapy and radiation. However if the compression causes weakness or numbness, surgery sometimes removes the pressure. In a famous 2005 study by Roy Patchell, surgery was thought to be the best initial treatment for early diagnosed spinal cord compression by tumor metastases. Since, more research has been performed with varying results. The decision for surgery tends to be based on the functional status of the patient, the stability of the spine, the location and number of metastases, the primary type of cancer and the sensitivity of that cancer to chemotherapy and radiation.
This amount of nerve compression from innumerable metastases is not amenable to surgery.
If you have a question about a spine tumor, please visit us at Rocky Mountain Brain & Spine Institute to discuss with our BOARD CERTIFIED spine surgeon.