Lymph nodes are the worst for us with HA, lol. It's a good thing that it's tender though. Like hachiko said, some nodes can swell up and never return to their original size. I have one in my neck that is bigger than all the other adjacent nodes but it was of no concern to the doc when I had them felt during an exam. As long as a node isn't like a golf ball or something, I don't think it's much to worry about.