I don't know if you have found a solution yet. I would encourage you to look at this paper by Dr. Shiels.
My daughter has had a LM since birth on the left side of her neck. She is now 10 years old. She was treated by Dr. Shiels in Jan 2010. We can see immediate results within days. She was treated with OK432 when she was 2 years old. Dr. Shiels will look at your MRI and consult on phone with you.