I know someone who used Palladia on a mast cell cancer. It was used conjunction with prednisone. She reported back to me that the tumor did slow a great deal after they started the combination.
Do a search on here for SCC, you'll find it is quite common in our little ones and often is very aggressive.
Please keep us updated on how the Palladia works. It is one of the drugs I haven't had used on a hedgehog yet, but is on my list to ask doc about the next time we encounter a cancer that it may be useful for.