My friend has a large lump at the base of his neck in the back just where the base of the neck meets the back. He is having pain down his left arm, cannot hold anything in his hand that is heavy, tingling and numbness down his left arm also. He is Chinese and does not want to see a Doctor because he does not have Insurance or a good job. I just found out about it today and looked at it. It looks like an enlarged lymph gland, but is about 2 1/2" X 2 1/2" and is very tender. It is raised about a 16th of an inch, maybe a little more. I am concerned for him as he works extremely hard chopping, cooking in a Chinese Restaurant. He is visibly in a lot of discomfort.??!!