Hi - My cat it 19-20 years old and has just developed a rapidly growing lump half-way up her tail. It's about the size of a nickel now, with no hair, white in color, and is fairly hard. When I noticed it 3 weeks ago, it was flat and just looked like it was missing some hair. The vet gave us Tritop ointment to see if it would help, but the mass has only increased in size. The vet says it's likely a tumor, but due to the cat's age and some kidney issues, removal is very risky and she will likely not survive the surgery. Any advice would be greatly appreciated!