Did the vet suggest an x-ray or ultrasound? I don’t know how aggressive you want to get regarding treatment, but, the first step would be to get the “mass” correctly diagnosed.
Is the “mass” causing him discomfort?
Do you know if the “mass” has metastasized? Spread to the lungs? Is his lab work within normal limits?
I know an emergency veterinary clinic would give you these answers within an hour…..however it wouldn’t be cheap.
I would want to identify what I was dealing with so that I could evaluate my treatment options, or lack of them.
I myself wouldn’t be comfortable with a wait and see stance. But, then again, we are all different, and it is your pet.
