i have a 4 year old persian cat, with a lump in his intestine, he has had 2 open surgery biopsies, 7 ultrasound scans, 20 weeks of antibiotics (marbocyl, noraclav & flagyly) he is now on steroids and flagyl,...
How's his bloodwork?
I have two suggestions. First, if you haven't already, he needs to go to a second vet. I can't imagine one
vet ordering so many ultrasounds and 2 biopsies, but I suppose it would be possible. So, a second opinion is a must.
Second, try to find a vet that practices either homeopathy or holistic medicine. If your cats has been to traditional vets with this much testing and they can't help, now is the time to try something outside tradition. Homeopathy, herbalism, acupunture, etc. -- while not accepted by all, each mode does work and one may help in this case.