Also, Eileen, the caudal block is used in these cases because any surgery on the genitals is more painful than most other surgeries because of the extensive nerve endings that reside there. Once again, good luck with your daughter and her surgery..please be sure to let us know how it turns out..Katie will have to have her surgery redone pretty soon and I am really curious as to what they do, how long she will be out of commission, etc......