Well, there are a whole lot of other blood markers that are not in this panel - like RBC's hemoglobin, hematocrit, potassium, sodium, chloride, bilirubin, enzymes (ALT, AST, ALK Phosphatase, lipase), calcium, phosphorous...
With the elevated WBC, absolute neutophis and eosinophils I don't know how the vet can say "no infection".
From Cami's first blood panel (very comprehensive) it was clear that her liver and kidneys were struggling to either function normally or were working overdrive to clear something - such as the diffuse inflammation/bacterial infection that seems to have been the case. Yes, it is hard to differentiate lymphoma from inflammation/infection from blood work and ultra sound which is why they will say it could be either. Only time will tell. Infection will clear with ABs, but lymphoma will not.
Did they do any xray or ultrasound?
Chronic issues like IBD, p-titis, and so on cause a lot of normal processes to become unbalanced. Unfortunately, most of our cats lack a lot of basic nutrition from commercial diets making it harder from them to fight off stuff. Aging, of course, also makes things harder for them to fight off.
The high BUN and the high BUN/Creatinine ratio indicate dehydration and/or kidney insufficiency. It is possible to be getting subQ fluids and still be dehydrated to a degree. Cami had elevated kidney values (BUN & Creatinine) for months while getting fluids. In fact, I think she stopped needing fluids when her values dropped into the normal range. Diabetes, over time, can cause kidney damage and high B&C, although more so in humans, I think. Do you add a little water to Buddy's food?
If I were you, I would ignore that "possible cancer" comment for now. As you posted on the other thread, you would not aggressively treat cancer. So try to manage the other issues. Maybe increase his fluids? I was giving Cami 75ml/day. Does Buddy have any heart disease? Ask the vet if that amount of fluids is ok - should be if no heart disease. He may need a broad spectrum AB, such as Baytril. That is what Cami was on for over two months, and then put back on when her kidney values were still higher after a month. Bacterial infection in the kidneys will cause kidney insufficiency. She has been off it again for 3 months now.
And, I believe the vet means lymphoma, when s/he says "cancer". Do know that lymphoma can be slowly progressing and will usually respond to steroids for a while. Unlike carcinomas, lymphomas can shrink with the use of steroids. I had a cat with nasal lymphoma and we managed her for 9 months on bi-weekly depomedrol shots. Yes, steroids are contraindicated for diabetics, but you are not expecting a cure, just a palliative effect so he is comfortable for as long as possible. The diabetes can be worked around that with dose adjustments as necessary.
