Apparently the investigation into former USC gynecologist George Tyndall is only a month old, and there are already 410 complaints and 27 people filing suit. Scarily similar to the MSU case, known complaints date back to the 1990s. Unlike MSU, USC appears to have a much stronger reporting culture--39 of 52 initial reports were provided to police by the university--and they're being far more proactive in investigating and firing those who looked the other way.
I'd have to suggest that knowing they're a private university, and that they have no sovereign immunity, might have something to do with that. Even so, I would guess there will be thousands of plaintiffs by the time this one plays out.
And if you read the articles--not recommended for the squeamish, by the way--I think you'll wonder why someone would do such things. Well, here's a 1991 New York Times article about the subject, and here's a database from the University of Michigan as well.