My Dogs Throat Is Swollen My Dogs Hasn't Eaten In Maybe 3 Weeks And Now Her Throat Is Swollen, Whats Wrong With Her? Is It Cancer?

My dogs hasn't eaten in maybe 3 weeks and now her throat is swollen, Whats wrong with her? is it cancer? - my dogs throat is swollen

I noticed that my dog is not really a big appetite, even when I shave with the day when I realized that I too thin .. Now it was her throat started to grow .. I was hoping someone can help me and maybe give me an idea of what is wrong with him is. cancer would have died? [You can not get him to the vet.]