Will Falconer, DVM Moderator
Hi Teresa,
They need professional help. Cancer, benign or malignant, is not DIY. The best modality of treatment I know is homeopathy. You can search for a vet homeopath to guide this dog to betterment via the AVH list on my Resources page.
Don't shirk on diet, of course, get the poisons out of the picture, and by no means should this dog ever get vaccinated again for anything. See the links in the article above to give you some ideas.