Thank you for your inquiry to Holistic Pet Info. Fighting cancer has a multimodal approach. First: diet, your cat should be eating a no carb/grain diet, moderate fat and high quality protein diet. Ideally, a complete and balanced raw diet. Second: support the immune system with supplements such as Immugen by Thorne, C-Caps by PetAlive and Animal Essentials Fish Oil. Third: treatments that block or stop the spread of the cancer cells. Neoplasene topically and orally may work well for the carcinoma. You may want to find a acupuncture/holistic vet in your area to look into treatment using the Neoplasene. Best of luck.
Colleen Smith DVM,CVA