Actually, scratch that. I did some googling and it turns out that's just a really weird rumor surrounding Curtis. I guess the Baltimore Sun printed it as a small sidenote to a larger article one day, and has not been able to substantiate the claim. Since then, it's just been one of those rumors that works itself around through friends that seem trustworthy to people because they heard it from so-and-so's ex's cousin whose best friend is a surgeon that went to medical school and heard it from his advisor, whose former colleague did the surgery.
Sounds like bullshit that Jamie Lee Curtis was ever born with anything like that. Never mind.