Dear Rob:
It is unlikely that what you are describing is a simple herniation of the disc. However, it is difficult to tell you with certainty without seeing the MRI. What you don't tell me is whether a mass was found. The description is one of previous insult (myelomalcia) and myelopathy (abnormal tissue). This may have been the result of a previous injury or trauma such as an infectious process, toxin, or demyelinating process. What the surgeon is looking for is if there is a mass, where is it located in the column. Is it from the outside pushing in on the cord (tumor, trauma, lymphoma, myeloma, abscess, cervical or disc-chronic, rheumatoid arthritis), outside the spinal cord but inside the covering of the cord (meningioma, neurofibroma), or is it inside the cord proper (glioma, ependymoma, or arteriovenous malformation).
Sorry I am not much help. As you can see, there are alot of possibilities. I bet the MRI was either of poor quality (to the surgeon) or he/she needed more views. Let us know what happens.
CCF Neuro MD
My neurologist seems to think it is a mass and called it a epidural canal blockage. He took me off work until the neurosurgeon could say what he thinks. Since I have been off work (one week) my symtoms have improved alot and has left me thinking it could be disc problems. The only thing that has botherd me is a headache that gets worse when laying down. Anyway I will find out something monday.
Rob