When a major instigator of feline lymphomas was the feline leukemia and the feline aids viruses, the lymphomas tended to spring up in multiple locations outside of the digestive tract ( multi-centric ). They still do, but not in the quantity that they once did. They now tend to occur in the cat’s digestive ( alimentary ) tract and the organs that adjoin it ( pancreas, liver and gall bladder ) - particularly in older cats. Many of the lymphomas that occur in the alimentary tract are quite treatable. You can read more about these tumors and their treatment here , here and here .
PUVA is a special treatment using a photosensitizing drug and timed artificial-light exposure composed of wavelengths of ultraviolet light in the UVA spectrum. The photosensitizing drug in PUVA is called psoralen. Both the psoralen and the UVA light must be administered within one hour of each other for a response to occur. These treatments are usually given in a physician's office two to three times per week. Several weeks of PUVA is usually required before seeing significant results. The light exposure time is gradually increased during each subsequent treatment. Psoralens may be given orally as a pill or topically as a bath or lotion. After a short incubation period, the skin is exposed to a special wavelength of ultraviolet light called UVA. Patients using PUVA are generally sun sensitive and must avoid sun exposure for a period of time after PUVA. Common side effects with PUVA include burning, aging of the skin, increased brown spots called lentigines , and an increased risk of skin cancer , including melanoma . The relative increase in skin cancer risk with PUVA treatment is controversial. PUVA treatments need to be closely monitored by a physician and discontinued when a maximum number of treatments have been reached.
I so sorry to hear the news about Sketchie. When I had read your post about Him having to get surgery I was really hoping for good news, unlike what my mom and I got with our cat. We had just gotten a 6month old Savannha kitten in December and we got her from a local shelter after she had been dumped by her breeder and he said there was no hope for her , just put her down :( Well the shelter didn’t want to do that so she was getting treatment for a month and finally she was put up for adoption. Along came my mom and I, and we were not looking to get a cat we were just there visiting since we put our cat before down in Oct. well we ended up adopting our cat which we named Mochi. She was a little skinny , kind of walked funny, and was said to have IBS just like Sketchie. So we were giving her medicine for that and everything was going fine. Well two months later in Feb. one morning, my mom woke up and she was laying in her urine, so I put her in the litter box and she just collapsed. We later that day took her to an animal emergency clinic where we as well got terrible news. Mochi had FIP which is an uncurable disease. How the disease works is it messes with their neurological system, shuts down their organs, and they eventually die. After only two months of having our sweet kitty, my mom and I were not ready for the decision we had to make, but it was what was best for Mochi. We had to put her down and that’s why I was really hoping for a better turn out with Skechtie for he is a gorgeous cat and I hate seeing thse things happen to undeserving animals. I hope you find a treatment for him and things get better!