I don't know how much you believe in holistic medicine and self-healing but you might want to look into it. There's a well known story out there about Dirk Benedict - the original Starbuck from Battlestar Galactica - curing his prostate cancer by changing his diet. The theory is that different types of cancer "feed" on different nutrients, enzymes and such found in different parts of your bloodstream and organs. By changing your diet, you change the balance and availability of those elements and effectively "starve" the cancer away.

http://home.planet.nl/~marte163/DirkHealth.htm

Will it work for you? Who knows, but it's better than doing nothing.