Dozens of child abuse cases could be re-opened because of the evidence of a controversial expert.Calls were today made for a review after a North East man had his conviction for raping a boy overturned because of the evidence of Dr Camille San Lazaro.Dr Lazaro was criticised in 2002 for her role in the investigation into false claims of abuse at a Newcastle nursery by Dawn Reed and Christopher Lillie.Now her evidence has been blamed for Kevin Brown’s conviction. He has served his seven-year sentence for raping the five-year-old boy.Today it was claimed dozens of other convictions could be overturned after the Appeal Court referred back to the 2002 libel proceedings in which Dr Lazaro’s evidence was branded “completely discredited”.