I've got a lymph node in my neck that swells roughly every 3 months. It is very painful and last measurement was 3 cm. I haven't been able to get a biopsy because by the time the appointment gets scheduled the node shrinks and the doctors won't do a biopsy because the node is too close to my curadid artery. They said that a painful lymph node is good because if it was cancerous it wouldn't be painful. I'm frustrated, any thoughts?