I found a lump on the right side of my neck a few months ago, it is hard to swallow and food gets stuck in my throat, my ear hurts, coughing for no reason like a seal, chest pain, I m a asthma and COPD patient. my Dr. said the right side of my neck is swollen and ordered a x-ray and a full blood panel fasting the night before. I never had any of these issues until after a hiatus hernia surgery in August of 2014. so what is he looking for in the x-ray and blood ?