What is the definition or description of: spinal cord compression?

Could be dangerous : Spinal cord compression develops when the spinal cord is compressed by bone fragments from a vertebral fracture, a tumor, abscess, ruptured intervertebral disc or other lesion. It is regarded as a medical emergency independent of its cause, and requires swift diagnosis and treatment to prevent long-term disability due to irreversible spinal cord injury.

Progressive weakness: Spinal cord compression refers to physical compression of the cervical or thoracic spinal cord. This can occur from injury, infection or tumors. There is also chronic compression from stenosis (narrowing of the spinal confines). The symptoms and outcome vary depending on the cause and the location. Surgical decompression (removing the cause of the compression) is the mainstay of treatment.