The huge benefit of going to a large referral type center such as Mayo Clinic or Cleveland Clinic is the way that the specialties work together to solve the issues. Instead of trying to shift you to a different specialist, they combine their talents and perhaps you will see many specialists to get an answer. Your inflamed lymph node could be associated with a cancer that has not been identified. Keep advocating for yourself until you find the doctors or institution who will diagnose your problem. Mayo Clinic was it for me, after seeing local ENTs (3) and the University of Michigan Medical center. I have metastatic squamous cell carcinoma stemming from original tumor in my ear canal, but am alive today thanks to Mayo Clinic Rochester and my persistence in finding a diagnosis.