Finally...

We are finally on the right track. I saw the Internal Medicine specialist at UT today and she agreed that I needed a CT scan and biopsy. She was apparently impressed by the hardness of the nodes. She said a couple of times, "They are small, but boy are they hard."She was worlds better than the previous doctor. Very serious and no chit-chat, but as my dad says, that's not what you are paying them for.
She took tons of blood for the hospital lab to run "extensive" blood work on. Apparently they break it down and look at it on a cellular level, looking for chemical markers, sedimentation rates, and other stuff that meant nothing to me. She also sent me for a chest X-ray this afternoon.
Unfortunately, she did not offer any alternate diagnosis. I could tell from her questioning that she was looking for other possibilities, but came up with none. I have the CT scan on Friday, as well as an appointment with the surgeon. She thought we might be able to get a biopsy as soon as next week.