Laminectomy is used for metastatic tumor invasion of the spinal cord (which causes compression), and for narrowing of the spinal cord (a condition called spinal stenosis.)

Spinal Stenosis is a degenerative process on the spinal cord. Narrowing of the spinal canal begins to the flattened the spinal cord resulting in root nerve compression.

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Myelography involves injecting contrast dye into the space around the spinal cord to help visualize the spinal cord, nerve roots, and surrounding tissues on X-ray images. This procedure can help diagnose spinal cord or nerve compression caused by various conditions such as herniated discs, tumors, or spinal stenosis.

The purpose of a myelogram is to evaluate the spinal cord and/or nerve roots for suspected compression