Unfortunately I have experience with the swollen lymph gland. My first Maltese at age 9. I noticed a swollen gland on one side only, took him to his doctor, then got a referral to the veterinary college. There, they were pretty sure it was Non-Hodgkins lymphoma but couldn't be positive until they removed a lymph gland and staged the tumor. At the time they were conducting blind studies on new cancer drugs, and wanted to admit him into one of them. Problem with that was there was no guarantee he would get the drug or a placebo. Also, while the test was going on he could not receive any other medication. It was all very frightening to me, so I said "No, he's my friend and he trusts me. He's not going to be used as guinea pig!" I took him home, read up on liver disease and treatments, put him on the prednisone, and pumped him with vitamins A,C,E,D, and tincture of oat. We spent 10 more months together before he let me know it was time to go. I may not have had that if we had done the study. His cancer was in his liver. The breath - it had the odor of ammonia, or really really bad fish! Should your baby have a form of lymphoma only you can decide what's right for both of you. I'm so sorry I haven't better news. My incident was 10 years ago, perhaps there's new treatments and hope.