The daughter of a Londonderry man has said the Foyle Health and Social Care Trust refused to listen to her denials that she had been abused by her father.
The family are now suing the trust for negligence, with the case being heard at the High Court in Belfast.
The man was accused of being part of a paedophile ring.
In 1997, a teenage girl said he was involved in child sex abuse with more than 20 others. She later retracted her complaint and no charges were brought.
His daughter claimed the authorities refused to listen to their denials and instead subjected them to medical examinations from which they still suffer 13 years on.
"We spoke about (how) we weren't abused. But we weren't listened to," she said.
John Doherty from the trust told the court: "It's not for us to judge, our job is simply to satisfy ourselves in law that your children were not at risk."
He also said that, according to an experienced doctor, the examination the children would have been subject to was "not normally harmful".
The case continues.