reporter: i had deep depression and lost my job, survivor udo keiser said, but now it has documented. report details 547 cases of abuse, from withholding food to beating until bleeding, and 67 cases wer sexual abuse, and rap. a lawyer who carried out the investigation said victims likened the choir school to prison or a concentration camp. >> many of them described this as a the worst of their life, he explained. >> friends at the school said the abuse was an open secret. it sounds like the same culture of silence we heard in boston. in the united states. >> sure. >> doesn't that say there is a real problem with the church? >> there has been a problem in the children, yeah, and that is why we work on a change of that. >> reporter: zollner is also part of a commission for the protection of minors, set up by pope francis. he points out that some of the 49 alleged perpetrators have died. >> if the evil door is gone, who do you punish? >> reporter: they're expected to reach $23,000 each. the school said to expect a statement next week. seth doane, cbs news, rome. >> ninan: still ahead, it