Will Falconer, DVM Moderator
Hey Jen,
Let me just put this out there: this is chronic disease by definition. It goes on and on, right? "Years" as you have said.
It turns out that, while you'd love to cure this, conventional medicine has never cured chronic disease (and is highly unlikely to, given the mindset of drugs and surgery as their only answers).
So, what can cure chronic disease, then?
Homeopathy, but only when prescribed by a professional who's used to this exacting work.
So, rather than spend your money putting a name on the suspicious lumps, and more money on either removing them (also not a cure) or getting chemo (ditto for not curing), let me suggest you instead hire a qualified homeopathic vet.
Here's how to begin your search, key point: you need NOT have one anywhere near you to get this work started: https://youtu.be/XyEklB8W6M0
Wishing you post haste in getting out of the trap you find yourself in, as things go from bothersome to more dangerous the longer treatment goes on.