Spinal metastasis is common in cancer patients.
Metastatic disease to the neuraxis other than the brain parenchyma and the spinal column is uncommon. The meninges and the cranial nerves are the next most commonly involved structures. Spread from primary tumors is mainly by arterial route. Retrograde spread through Batson plexus during Valsalva maneuver has been postulated. Direct invasion through the intervertebral foramina can also occur.