In some twin pregnancies, one embryo stops developing, and some of its cells remain in the surviving twin. This can lead to ...

Scientists at the Wellcome Sanger Institute and others detailed the case in a report last week. One twin developed the cancer ...

Two identical sisters came into the world carrying the same rare cancer. They lost their lives to an undifferentiated sarcoma ...

From identical to mirror image twins and rare cases involving different fathers, read more to know about the different types ...