I have a painless mass in the inside of the elbow. It does cause my arm to hurt right above the inside crease and sometimes it hurts in my forearm. Also, there will be a burning sensation in the crease of my elbow. There is a little pain in my fingers as well off and on. I am worried about lymphoma!! I also had some nodes on top of my collar bone and went to an Oncologist. She told me not to worry that they weren't nodes to worry about.