I guess I don't really see what impact it would have on the case if Chris did have some type of (genital or not) cancer prior to conceiving Bella. If it was an STI, and it was treated and cleared, I don't see that having any impact either. Especially for men, infections can lie dormant for years, so its not proof of infidelity. Besides, we already have proof of his infidelity. I agree there is a reason he wanted the medical records sealed but I cant really think of a good reason why that would have an impact on the case. Maybe he just didn't want his or the kids private medical info known to the public. I know I wouldn't, especially if it was irrelevant.