Well, get the biopsy and go from there.
Difficult to say what this actually is without the biopsy and/or other testing.
They are in several different locations. Thats what got me concerned from the beginning. I believe they are also the root of joint pain iI have been having.
Where are the lymph nodes that are painful and swollen?
Usually, the nodes will be painless with Lymphomas, but it is possible for them to be painful too.