node/gland under jaw

I have the same thing.  It appeared suddenly last August.  Went to doctor who felt it and said it was a reactive node.  I thought it might be related to allergies.  Still not sure.  It got smaller, but never disappeared, then would get a little bigger again.  Right before Christmas, I thought I had a sinus infection and saw the PA.  She had just had a lymph node scanned and they told her it looked like a reactive node.  So this is not uncommon.   Frankly I just couldn't cope with going for a scan or a biopsy right before the holidays, as that is when my first breast cancer was diagnosed.   Thought I would wait until January, after my mammogram.  Well, that led to another biopsy and, here I sit, 9 weeks after a  BMX for DCIS.  When I got home from the hospital, I could hardly feel the lymph node under my jaw.  I thought it might be related to the antibiotics they gave me - perhaps I had a low grade infection.  Also, I was so distracted by the surgery and fretting once again about breast cancer, that I kept my paws off the lymph node.  If you touch them constantly, they will swell.  I still am not sure what it is or was.  I was told that if they are moveable and not hard, they are likely okay.  Also if they appear suddenly, they are likely okay.  Also, once swollen, they can take a long time to go down and, in fact, may never go back to normal.  You are not alone, if that makes you feel better in the short-term.  Sounds like you are pursuing an answer.  I hope you report back as I am curious what the ENT guy says.

jen:  Years ago, in my 20's, I had a swollen node under my jaw/chin area that my dr insisted was due to a dental procedure I had just had done.  It stayed swollen for years after!  I worried the entire time.  Please don't waste more precious time worrying.  She also insisted that because it was soft, etc. it was nothing to worry about.  She was right.