Re: 8mm nerve root sheath cyst
You poor thing! I don't know much about cervical problems and after my recent lumbar surgery, I hope never to have to learn, but I DID have a synovial cyst of about one and a half centimeters between L4/L5. It was pressing on my nerve resulting in pain. I also had two herniated dics, vertabral slippage (or what is called spondylolisthesis) and DDD. I had fusion surgery on October 25th and I'm doing very well.
I think that because of your cyst that you may be asked to consider surgery. My regular ortho doctor, after I had my x-rays and MRIs, and was diagnosed, said "don't screw around with this!", so I had to find myself a spine specialist. I can't emphasis this enough, to talk to a spine specialist who is a neuro/ortho surgeon.
Good luck to you and happy holidays.