Hi, my wife had a small lump in the armpit, when we had met a doctor we came to know, that it was a lymphnode swelling. She also had some puss oosing out from that part. She was under medication, the swelling would come down and after few days it comes back again and the puss also keep reforming. Which doctor we need to see for the proper diagonsis, since this issue has been present for almost a year, but it keeps coming and going. Please suggest.