I feel for the parents involved with the pediatrician scandal of Dr. Earl Bradley in Delaware, but I have one thing to tell all of them: Don't look away.
The police have collected his videos and images, the ones he made while abusing those children in his care. The police have also asked parents of children who were his patients to provide photos of their kids so they can identify whom they're looking at. Some parents have provided photos. Other's aren't sure they want to know.
Hiding from the truth doesn't make the problem go away. Sure your teen or pre-teen may not recall the abuse right now but if that doubt lingers, and I promise you it will, it will taint your child's entire life. You may not want to deal with it but if you love you child you have to. And while you might not want to deal with the outcome today, think of conversation you will have with your child in a decade when they demand to know what you did for them.
Being a parent is difficult, but once the choice is made there's no going back. I have little to offer other than to say "do the best job you can, and that means not stepping back from finding out the truth." Trust me, you don't want to have to face your kid with the answer "I'm sorry, but I just couldn't deal with knowing what he did to you."