What to do with my 15yo Mr. Jinks

Hi, Mr. Jinks is over 15 now; he plays, eats, runs, purrs. He is such a happy cat. 2 years ago my vet told me his WBC were low, probably from stressfrom cats bothering him outside on the deck. He has been on Prozak ever since, and we capture the bothering cats. This year the vet said his WBC is lower, she thinks he got of some kind of infection because I told her he mews when he pees. After a month of penicillin, she decided to do lab work again; she then told me his numbers were still very low. She decided to test him for FelIV and FIV, to which he was negative. Now she says she does not know what to do other than have me see an internal medicine specialist and do an ultrasound. I told her that he is happy, andif he had cancer I would not want to bother the rest of his life with annoing things such as chemiotherapy, just to make him miserable, she agreed with my decision. We decided together that I will take him to her every two months for blood tests and if anything happens. Now, after telling you the entire story, please tell me what you suggest. Should I see another vet? Am I being cruel? I feed him a variety of foods to keep his immune system as healty as possible. Thank you everyone. Barbara

I think you're being perfectly reasonable in your approach.  Animals actually tolerate chemo far better than humans do, but you have to weigh the stress of car rides and vet visits against potential benefits.  If he's otherwise healthy and active, chemo could be a means of giving him a couple to a few more quality years.  I'm not sure what the chemo schedule would look like for a cat, but I believe it's fewer rounds than a person would be subjected to with more time in between.  And from what I understand, they may have one to two slightly "off" days afterwards and then they're back to being their normal selves. I went through it with a dog years ago and she was always perky and raring to go home after the obligatory observation time. No nausea or any other symptoms.  

I think the type/stage of cancer (assuming that's the problem because it may very well be something else) would be a major factor in deciding for or against chemo. Some are more aggressive than others and the prognosis can sometimes make that decision for you.  My dog had a very aggressive bone cancer and if I had to do it all over again, I would opt to make the most of the time she had left rather than force her to endure long car rides and needle jabs, etc. Sometimes the kindest, most humane thing you can do is nothing at all (aside from pain management, of course).  It really all depends. 

I'm assuming she did a urinalysis and urine culture, yes?  

Yes, she did a urine culture as well. I think I will go to another vet, just to see what they suggest, now that it has been about two weeks without pennicillin and his number may be slightly different. Thank you.

Glad to help!  A second opinion sounds like a great idea   I wish you and Mr. Jinks all the best and I hope you'll keep us updated.