Welcome! My name is***** am a 2003 UC Davis graduate and practice owner.
I have reviewed your notes.
I understand they have nearly ruled out lymphoma as a cause for the lymphadenopathy, so the tests currently pending will be very important.
I do agree that x-rays will likely not offer much additional information about what is going on with the lymph node although, x-rays are very important as a diagnostic step for checking for metastasis (spread of cancer, especially to the lungs).
There is no question, that based on Sage's current symptoms and declining condition, a second opinion with another specialist is worthwhile. Why?
Well, internist are all excellent generally. But with a complicated case, it may be best to utilize a facility that can draw on multi-disciplines and "brains" to ensure no particular therapies are being missed. In addition, if a MRI or CT were to be pursued, everything is located at Davis.
I am very sorry to hear about this complication for Sage.
The additional infectious disease panels that are pending were appropriate in consideration of a lack of answers so far.
I do think considering a migrating foxtail or other foreign body could be a cause as well, and therefore, a test like a MRI is going to be necessary to try and help find it.
As a general practice veterinarian giving a second opinion, the treatment plan, diagnostics performed so far, and the current antibiotic therapy all seems good.