MRI is study of choice
If unavailable consider CT myelography
If unavailable consider CT myelography
Emergent MRI
If considering compression due to neoplasm obtain scan of entire spine
Consider Bladder scan/ultrasound for bladder volume (post-void residual)
If considering compression due to neoplasm obtain scan of entire spine
Spinal cord compression 
Complete spinal cord transection syndrome
Malignant spinal cord compression
Anterior cord syndrome
Epidural compression syndromes
Central cord syndrome
Spinal stenosis
Brown-Séquard syndrome