Surgeons remove two fetuses from infant

When I hear stories like this, it just reminds me how much of an incredible unlikelihood it is for any human ever to actually live through birth and into adulthood. . .

Surgeons remove two fetuses from infant:

"Surgeons operated on a 2-month-old Pakistani girl Tuesday to remove two fetuses that had grown inside her while she was still in her mother's womb, a doctor said."
[...]
"Other fetus-in-fetu cases have been reported elsewhere in the world. A report in a June 2000 issue of the U.S. journal Pediatrics called such occurrences rare and estimated their rate at about 1 per 500,000 births."