How much more?

My daughter was born with some birth defects involving her bladder and kidney’s. After countless surgeries from birth to age seven, the problems she was born with are some what fixed.
I got a letter from my daughter’s urologist Sept 3rd. It was sent out to all patients who are on intermittent catheterization or who have had a procedure to enlarge their bladder using bowel segments. Well my daughter has both. The letter goes on to say, “we have begun seeing a few cases of cancer developing in patients with bladders like yours, as have doctors at other institutions. It is important to understand, how ever that not all patients will develop cancer. At this time we do not know what caused these cancers to develop, or why they developed in some patients and not others. We understand that this new information about the possibility of cancer might make our patients uncomfortable. We want to reassure you again that we have only seen a few cases of cancer so far, but feel that it is important to watch all of our patients closely.” WHAT? What do you mean CANCER? WHAT else can go wrong? My daughter’s medical condition is very complex; I worry about her being in another country. What if she gets sick? Will the doctors there know what to do? I don’t even know if her medical condition is covered under his medical insurance. I am so worried about her.
I don’t know how much more stress I can take.
As far as my weight, I am pretty much maintaining. But here in the last few days, I just want to eat eat eat. I am so afraid of sliding back into my old habits.