Dude, one of my FIV+ cats, gets monthly depo injections to keep his stomatitis under control. It's an intramuscular injection that you can do at home after they show you how. Of course, being a steroid, it also makes him feel good overall. Hopefully, the injections can shrink the tumors for some time or at the very least greatly slow their growth. It would be great if a side effect of the injections helps with his diarrhoea also.

I mentioned the possibility of following through on chemotherapy because I have seen cases where it has worked, and I've met a few cats on the therapy who didn't have any side effects apart from throwing up for a day after the therapy. I've also heard about many cases where it hasn't worked and both cat and guardian have gone through the trauma for nothing. I was told by one vet that the problem with giving cats chemotherapy is not that it's hell on them but that cats (and don't we know this to be true!) don't show symptoms until the cancer is far enough advanced that treatment is more last-minute than it should be. It works better on dogs only because they show symptoms much sooner. When I was offered chemotherapy for a few of my cats, I asked about the chances of it working and they were not good because the cancer was too far advanced, so I didn't take that route either. I think vets offer chemotherapy because they know the caregiver/guardian wants to hear there could be some form of treatment. I'm sure your vet will talk about the odds with you.

Are you spending the evening cuddling Lucas close?