Physicians have told a British couple expecting conjoined twins that one must die if the other is to survive.
Tina May, 23, discovered in November she was carrying twin girls joined at the abdomen and sharing one heart and liver, the Sun newspaper reported Monday.
Tina and the twins' father, 33-year-old Dennis Smith, decided against an abortion and named the girls Natasha and Courtney, knowing they faced separation after birth.
A cardiac specialist told the parents the single heart is inside Natasha, meaning she is keeping her unborn sister alive and could survive an operation to separate them.
``We were told the chances of the stronger girl surviving were still very slim but at least there was some hope,'' May told the paper. ``I will have to let one die so the other can live.''
The twins will be born by caesarian section in April at the 37th week of her pregnancy.
The children will be transferred to London's Great Ormond Street children's hospital, where they will remain for a month before they are strong enough for the operation to divide them.
Their case follows the separation in November 2000 of Gracie Attard from her twin sister Rosie in an operation ordered by a High Court judge that ended her sister's life.
Michaelangelo and Rina Attard, both devout Roman Catholics from the Maltese island of Gozo, had fought a protracted legal battle to stop the operation, but later said they were glad the court had ruled in favor of the separation.