my 15 year old son started off with a very much swollen left arm. No bites or injuries. I bought him to the er and first thing they said was "swollen lymph nodes under armpit". very tender too touch. did excessice blood work, liver enzymes were 424, next a.m. were 288. they did ct, ultrasound, hepitist test, you name it, everything is showing normal. Any ideas what this cold be?