question: I have a lymph node under my arm for over two years now... The swelling goes up and down but it never fully disappears. I had a ct scan, multiple blood tests, an ultrasound, chest x ray and a core needle biopsy which got tissue from two different lymph nodes in my arm pit.. the results can back inconclusive because the sample was so small.. although my doctor believes I've ruled out lymphoma. Although I'm scared they missed something, because if it was an infection which I was negative for all of them, shouldnt the lymph node unswell?