As I replied to your PM; the MRI to look at the dorsal root ganglia is available at Hopkins, but I don't know if they can do it on the cervical and thoracic areas. It would certainly be worth a try though. HOWEVER, if the results are positive for ganglioneuritis, you need to understand there is NO effective treatment to date. So in affect, you may find out why, but get no further in how to treat.

I agree with others that what you started out with (mucus) lead to intervention that may have put you where you are today. I would suggest continuing supplements to promote healing.