hcg diet and melanoma

Hi my name is Lisa and I just recently finished the hcg injection phase of the diet. I am in the first maintenance phase and doing very well. I lost weight and it really works. I was able to stick to this diet fairly easily and I love it! My question is regarding melanoma. I had some melanoma removed from my left leg in 2004 and stayed clear until this last March 2009 and had to get another very small piece taken out of my leg. My last pet scan was clear but my the Dr.s think it would be a good idea to do some radiation targeted in that area. I mentioned the HCG diet to them and none had heard of it, but were very leary of it and said they would look into it. I was told that the hormone shot and melanoma are not good together and could result in I guess, bringing out more melanoma. I wasn't really clear on what they meant, but I'm sure I will be advised not to do it again. I want to do at least two more rounds of HCG but need to know it's safe. Since it is not FDA approved, I'm wondering if that's the reason why. This is the only diet I've ever done that has such great results and I feel so good. The weight loss I've had so far has helped my knees feel better and I feel healthy. Can you please give me your opinion regarding this. Sincerely, Lisa