My horse reportedly has a tumor on her belly. Took her to vet in January because I could not figure out what this open wound was, the vet told me it was a tumor. He banded the tumor and got part of it off and pretty much sent me on my way. It's open, constantly oozing.... first off I had never heard of or encountered an open tumor, I can tell its growing again, it has not closed up or anything. I am worried because I don't want bugs getting in it, I dont know how to heal it up or if it's even possible to heal it (close it). Does this mean she has cancer all through her body? I asked the Vet her prognosis,life span, and he said she will live indefinitely.... so how do I continue care for this. He gave us a spray (Catron IV) I think it was called, but that has no affect that I can see.